10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended: March 31, 2013

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to ______

Commission file number 33-26787-D

Zynex, Inc.

(Exact name of registrant as specified in its charter)

NEVADA	90-0214497
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)
9990 PARK MEADOWS DRIVE LONE TREE, COLORADO	80124
(Address of principal executive offices)	(Zip Code)

(303) 703-4906

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check One):

Large accelerated filer	¨	Accelerated filer	¨
Non-accelerated filer	¨ (Do not check if a smaller reporting company)	Smaller reporting company	x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Shares Outstanding as of May 13, 2013
Common Stock, par value $0.001	31,148,234

           

ZYNEX, INC. AND SUBSIDIARIES

INDEX TO FORM 10-Q

PART I—FINANCIAL INFORMATION

Item 1. Financial Statements	Page
Condensed Consolidated Balance Sheets as of March 31, 2013 (unaudited) and December 31, 2012	3
Unaudited Condensed Consolidated Statements of Operations for the three months ended March 31, 2013 and 2012	4
Unaudited Condensed Consolidated Statement of Stockholders’ Equity for the three months ended March 31, 2013	5
Unaudited Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2013 and 2012	6
Unaudited Notes to Condensed Consolidated Financial Statements	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	14
Item 4. Controls and Procedures	19
PART II—OTHER INFORMATION
Item 1. Legal Proceedings	19
Item 1A. Risk Factors	19
Item 6. Exhibits	20
Signatures	21

 2 

ITEM 1. FINANCIAL STATEMENTS

ZYNEX, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES)

	March 31, 2013	December 31, 2012
	(UNAUDITED)
ASSETS
Current Assets:
Cash	$ 681	$ 823
Accounts receivable, net	11,234	12,224
Inventory	6,324	6,160
Prepaid expenses	256	243
Deferred tax assets	1,855	1,855
Other current assets	228	57
Total current assets	20,578	21,362
Property and equipment, net	3,519	3,851
Deposits	170	171
Deferred financing fees, net	85	98
Intangible assets, net	188	203
Goodwill	251	251
Total assets	$ 24,791	$ 25,936
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Line of credit	$ 6,602	$ 5,906
Current portion of notes payable and other obligations	151	144
Accounts payable	1,675	2,057
Income taxes payable	1,003	1,430
Accrued payroll and payroll taxes	934	899
Deferred rent	390	371
Current portion of contingent consideration	21	21
Other accrued liabilities	524	1,265
Total current liabilities	11,300	12,093
Notes payable and other obligations, less current portion	144	114
Deferred rent	673	785
Deferred tax liabilities	786	786
Warranty liability	20	20
Contingent consideration, less current portion	87	83
Total liabilities	$ 13,010	$ 13,881
Stockholders’ Equity:
Preferred stock, $ .001 par value, 10,000,000 shares authorized, no shares issued or outstanding	—	—
Common stock, $ .001 par value, 100,000,000 shares authorized,  31,148,234 shares issued and outstanding at March 31, 2013, and December 31, 2012.	31	31
Paid-in capital	5,489	5,453
Retained earnings	6,262	6,566
Total Zynex, Inc. stockholders’ equity	11,782	12,050
Noncontrolling interest	(1)	5
Total Stockholders’ equity	$ 11,781	$ 12,055
Total liabilities and stockholders’ equity	$ 24,791	$ 25,936

See accompanying notes to unaudited condensed consolidated financial statements.

 3 

ZYNEX, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(UNAUDITED, AMOUNTS IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA)

	Three months ended March 31,
	2013	2012
Net revenue:
Rental	$ 1,679	$ 2,062
Sales	5,989	6,882
	7,668	8,944
Cost of revenue:
Rental	301	258
Sales	1,890	1,555
	2,191	1,813
Gross profit	5,477	7,131
Selling, general and administrative expense	5,833	6,645
(Loss) income from operations	(356)	486
Other expense:
Interest expense	(130)	(93)
Other expense	(6)	—
	(136)	(93)
(Loss) income before income tax	(492)	393
Income tax benefit (expense)	182	(73)
Net (loss) income	(310)	320
Plus: Net loss – noncontrolling interest	6	—
Net (loss) income – attributable to Zynex, Inc.:	$ (304)	$ 320
Net (loss) income per share:
Basic	$ (0.01)	$ 0.01
Diluted	$ (0.01)	$ 0.01
Weighted average number of common shares outstanding:
Basic	31,148,234	30,881,770
Diluted	31,148,234	31,037,417

See accompanying notes to unaudited condensed consolidated financial statements.

 4 

ZYNEX, INC.

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(UNAUDITED, AMOUNTS IN THOUSANDS, EXCEPT SHARE DATA)

	Number of Shares	Common Stock	Paid in Capital	Retained Earnings	Noncontrolling Interest	Total
January 1, 2013	31,148,234	$ 31	$ 5,453	$ 6,566	$ 5	$ 12,055
Employee stock-based compensation	—	—	36	—	—	36
Net loss	—	—	—	(304)	(6)	(310)
March 31, 2013	31,148,234	$ 31	$ 5,489	$ 6,262	$ (1)	$ 11,781

See accompanying notes to unaudited condensed consolidated financial statements

 5 

ZYNEX, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED, AMOUNTS IN THOUSANDS)

	Three months ended March 31,
	2013	2012
Cash flows from operating activities:
Net (loss) income	$ (310)	$ 320
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation expense	213	213
Change in the value of contingent consideration	4	—
Provision for losses on uncollectible accounts receivable	136	63
Amortization of intangible assets	15	—
Amortization of financing fees	13	12
Provision for obsolete inventory	17	—
Deferred rent	(93)	(75)
Employee stock-based compensation expense	36	46
Deferred tax expense	—	19
Changes in operating assets and liabilities, net of business acquisition (in 2012):
Accounts receivable	854	(721)
Inventory	(181)	(995)
Prepaid expenses	(13)	(11)
Deposit and other current assets	(170)	24
Accounts payable	(382)	335
Accrued liabilities	(705)	(47)
Income taxes payable	(427)	47
Net cash used in operating activities	(993)	(770)
Cash flows from investing activities:
Purchases of equipment	(55)	(76)
Change in inventory used for rental	247	(119)
Cash paid for acquisition	—	(145)
Net cash provided by (used in) investing activities	192	(340)
Cash flows from financing activities:
Net borrowings from line of credit	696	1,096
Deferred financing fees	—	(2)
Payments on notes payable and capital lease obligations	(37)	(31)
Net cash provided by financing activities	659	1,063
Net decrease in cash	(142)	(47)
Cash at beginning of period	823	789
Cash at end of period	$ 681	$ 742
Supplemental cash flow information:
Interest paid	$ 113	$ 62
Income taxes paid (including interest and penalties)	$ 427	$ 65
Supplemental disclosure of non-cash investing and financing activities:
Common stock issuances for business acquisition	$ —	$ 158
Increase in accounts payable for business acquisition	$ —	$ 100
Increase in contingent consideration for business acquisition	$ —	$ 135
Equipment acquired through capital lease	$ 72	$ —

See accompanying notes to unaudited condensed consolidated financial statements

 6 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

(1) UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND MANAGEMENTS’ PLANS

Zynex, Inc. (a Nevada corporation) and its subsidiaries, Zynex Medical, Inc. (ZMI) (a Colorado corporation, wholly-owned), Zynex NeuroDiagnostics, Inc. (ZND) (a Colorado corporation, wholly-owned), Zynex Monitoring Solutions Inc. (ZMS) (a Colorado corporation, wholly-owned), Zynex Billing and Consulting, LLC (ZBC) (a Colorado limited liability company, 80% majority-owned) and Zynex Europe, ApS (ZEU) (a Denmark corporation, wholly-owned), are collectively referred to as the “Company”.  

The unaudited condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and accounting principles generally accepted in the United States of America (“U.S. GAAP”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures included herein are adequate to make the information presented not misleading. A description of the Company’s accounting policies and other financial information is included in the audited consolidated financial statements as filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012. Amounts as of December 31, 2012 are derived from those audited consolidated financial statements. These interim condensed consolidated financial statements should be read in conjunction with the annual audited financial statements, accounting policies and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, which has previously been filed with the SEC.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly the financial position of the Company as of March 31, 2013 and the results of operations and cash flows for the periods presented. All such adjustments are of a normal recurring nature. The results of operations for the three months ended March 31, 2013 are not necessarily indicative of the results that may be achieved for a full fiscal year and cannot be used to indicate financial performance for the entire year.

For the three months ended March 31, 2013 and 2012, the Company reported negative cash flows from operations of $993 and $770, respectively. In addition, the Company’s line of credit increased from $5,906 at December 31, 2012 to $6,602 at March 31, 2013, primarily driven by working capital requirements related to an increase in sales orders during the year. Maximum borrowings under the line of credit are $7,000. Management developed the Company’s operating plans for 2013 to emphasize cash flow, under which the Company is making operational billing changes to increase cash collections as well as implementing various cost modifications to reduce expenses. Management believes that the Company’s cash flows from operating activities and borrowing available under the line of credit will be sufficient to fund cash requirements through March 31, 2014.

(2) SIGNIFICANT ACCOUNTING POLICIES

PRINCIPLES OF CONSOLIDATION

The accompanying unaudited condensed consolidated financial statements include the accounts of Zynex, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

NONCONTROLLING INTEREST

Noncontrolling interest in the equity of a subsidiary is accounted for and reported as shareholders equity. Noncontrolling interest represents the 20% ownership in the Company’s majority-owned subsidiary, ZBC. In 2012, the noncontrolling interest member contributed $10 of property and equipment to ZBC.

USE OF ESTIMATES

Preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The most significant management estimates used in the preparation of the accompanying consolidated financial statements are associated with the allowance for contractual adjustments and uncollectible accounts receivable, the reserve for obsolete and damaged inventory, stock-based compensation, valuation of goodwill and other long-lived assets, and income taxes.

REVENUE RECOGNITION, ALLOWANCE FOR CONTRACTUAL ADJUSTMENTS AND COLLECTIBILITY

The Company recognizes revenue when each of the following four conditions are met 1) a contract or sales arrangement exists 2) products have been shipped and title has transferred, or rental services have been rendered 3) the price of the products or services is fixed or determinable and 4) collectability is reasonably assured. Accordingly, the Company recognizes revenue, both rental and sales,

 7 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

when products have been delivered to the patient and the patient’s insurance (if the patient has insurance) has been verified. For medical products that are sold from inventories consigned at clinic locations, the Company recognizes revenue when it receives notice that the product has been prescribed and delivered to the patient and the patient’s insurance coverage has been verified or preauthorization has been obtained from the insurance company, when required. Revenue from the rental of products is normally on a month-to-month basis and is recognized ratably over the products’ rental period. Revenue from sales to distributors is recognized when the Company ships its products, which fulfills its order and transfers title. Revenue is reported net, after adjustments for estimated insurance company or governmental agency (collectively “Third-party Payors”) reimbursement deductions. The deductions are known throughout the health care industry as “contractual adjustments” whereby the Third-party Payors unilaterally reduce the amount they reimburse for the Company’s products.

A significant portion of the Company’s revenues are derived, and the related receivables are due, from Third-party Payors. The nature of these receivables within this industry has typically resulted in long collection cycles. The process of determining what products will be reimbursed by Third-party Payors and the amounts that they will reimburse is complex and depends on conditions and procedures that vary among providers and may change from time to time. The Company maintains an allowance for contractual adjustments and records additions to the allowance to account for the risk of nonpayment. Contractual adjustments result from reimbursements from Third-party Payors that are less than amounts claimed or where the amount claimed by the Company exceeds the Third-party Payors’ usual, customary and reasonable reimbursement rate. The Company determines the amount of the allowance, and adjusts it at the end of each reporting period, based on a number of factors, including historical rates of collection, the aging of the receivables, trends in the historical rates of collection and current relationships and experience with the Third-party Payors. If the rates of collection of past-due receivables recorded for previous fiscal periods changes, or if there is a trend in the rates of collection on those receivables, the Company may be required to change the rate at which it provides for additions to the allowance. A change in the rates of the Company’s collections can result from a number of factors, including experience and training of billing personnel, changes in the reimbursement policies or practices of Third-party Payors, or changes in industry rates of reimbursement. Accordingly, changes to the allowance for contractual adjustments, which are recorded in the income statement as a reduction of revenue, have historically fluctuated and may continue to fluctuate significantly from quarter to quarter.

Due to the nature of the industry and the reimbursement environment in which we operate, estimates are required to record net revenues and accounts receivable at their net realizable values. Inherent in these estimates is the risk that they will have to be revised or updated as additional information becomes available. Specifically, the complexity of third-party billing arrangements and the uncertainty of reimbursement amounts for certain products or services from payors or an unanticipated requirement to refund payments previously received may result in adjustments to amounts originally recorded. Due to continuing changes in the health care industry and third-party reimbursement, as well as changes in our billing practices to increase cash collections, it is possible that management’s estimates could change in the near term, which could have an impact on our results of operations and cash flows. Any differences between estimated settlements and final determinations are reflected as an increase or a reduction to revenue in the period when such final determinations are known.

The Company frequently receives refund requests from insurance providers relating to specific patients and dates of service. Billing and reimbursement disputes are very common in the Company’s industry. These requests are sometimes related to a limited number of patients or products; at other times, they include a significant number of refund claims in a single request. The Company reviews and evaluates these requests and determines if any refund request is appropriate. The Company also reviews these refund claims when it is rebilling or pursuing reimbursement from that insurance provider. The Company frequently has significant offsets against such refund requests, and sometimes amounts are due to the Company in excess of the amounts of refunds requested by the insurance providers. Therefore, at the time of receipt of such refund requests, the Company is generally unable to determine if a refund request is valid and should be accrued.

As of March 31, 2013, the Company believes it has an adequate allowance for contractual adjustments relating to all known insurance disputes and refund requests. However, no assurances can be given with respect to such estimates of reimbursements and offsets or the ultimate outcome of any refund requests.

In addition to the allowance for contractual adjustments, the Company records an allowance for uncollectible accounts receivable. Uncollectible accounts receivable are primarily a result of the following: non-payment from patients who have been direct billed for co-payments or deductibles, lack of appropriate insurance coverage and disallowances of charges by Third-party Payors. If there is a change to a material insurance provider contract or policy, application by a provider, a decline in the economic condition of providers or a significant turnover of Company billing personnel resulting in diminished collection effectiveness, the estimate of the allowance for uncollectible accounts receivable may not be adequate and may result in an increase in the future.

 8 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

At March 31, 2013 and December 31, 2012, the allowance for uncollectible accounts receivable is $1,837.

FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company’s financial instruments at March 31, 2013 include cash, accounts receivable and accounts payable, for which current carrying amounts approximate fair value due to their short-term nature. Financial instruments at March 31, 2013 also include the line of credit and notes payable, the carrying value of which approximates fair value because the interest rates on the outstanding borrowings are at rates that approximate market rates for borrowings with similar terms and average maturities.

INVENTORY

Inventories, which primarily represent finished goods, are valued at the lower of cost (average) or market. Finished goods include products held at the Company’s headquarters and at different locations by health care providers or other parties for rental or sale to patients. Total (gross) inventories at March 31, 2013 included $6,265 of finished goods, $526 of parts, and $513 of supplies.

The Company monitors inventory for turnover and obsolescence, and records losses for excess and obsolete inventory as appropriate. At March 31, 2013, the Company had an allowance for obsolete and damaged inventory of approximately $980. The allowance for obsolete and damaged inventory was approximately $1,181 at December 31, 2012. The Company had $2,165 of open purchase commitments at March 31, 2013.

PROPERTY AND EQUIPMENT

Property and equipment are stated at cost. Products on rental contracts are placed in property and equipment and depreciated over their estimated useful life. The Company removes the cost and the related accumulated depreciation from the accounts of assets sold or retired, and the resulting gains or losses are included in the results of operations. Depreciation is computed using the straight-line method over the useful life of the asset. As rental inventory contributes directly to the revenue generating process, the Company classifies the depreciation of rental inventory in cost of revenue.

Repairs and maintenance costs are charged to expense as incurred.

GOODWILL AND INTANGIBLE ASSETS

Goodwill represents the excess of the purchase price over the fair value of the net assets of the business acquired. Authoritative guidance requires that goodwill be tested for impairment at the reporting unit level (operating segment or one level below an operating segment) on an annual basis and between annual tests when circumstances indicate that the recoverability of the carrying amount of goodwill may be in doubt. Application of the goodwill impairment assessment requires judgment in determining the fair value. Significant judgments are required to estimate the fair value including estimating future cash flows, determining appropriate discount rates and other assumptions. The Company initially performs a qualitative evaluation to determine if it is more likely than not that the fair value is less than its carrying amount as a basis for determining whether it is necessary to perform a two-step goodwill impairment test. During the three months ended March 31, 2013, the Company performed the qualitative evaluation and determined that there were no events that indicated that an impairment of goodwill exists as of March 31, 2013.

Intangible assets with estimable lives are amortized in a pattern consistent with the asset’s identifiable cash flows or using a straight-line method over their remaining estimated benefit periods if the pattern of cash flows is not estimable. The Company reviews the carrying value of intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of long-lived assets is measured by comparison of their carrying amounts to the undiscounted cash flows that the asset or asset group is expected to generate. If the carrying amount of the assets exceeds the undiscounted cash flows the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value.

STOCK-BASED COMPENSATION

The Company accounts for stock-based compensation through recognition of the cost of employee services received in exchange for an award of equity instruments, which is measured based on the grant date fair value of the award that is ultimately expected to vest during the period. The stock-based compensation expenses is recognized over the period during which an employee is required to provide service in exchange for the award (the requisite service period, which in the Company’s case is the same as the vesting period).

 9 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

(3) PROPERTY AND EQUIPMENT

Property and equipment as of March 31, 2013 and December 31, 2012 consist of the following:

	March 31, 2013	December 31, 2012	Useful lives
Office furniture and equipment	$ 1,960	$ 1,836	3-7 years
Rental inventory	2,772	3,147	5 years
Vehicles	76	76	5 years
Leasehold improvements	375	375	2-6 years
Assembly equipment	171	168	7 years
	5,354	5,602
Less accumulated depreciation	(1,835)	(1,751)
	$ 3,519	$ 3,851

(4) INTANGIBLE ASSETS

Intangible assets as of March 31, 2013 and December 31, 2012, consist of the following:

	March 31, 2013	December 31, 2012	Amortization Life Years
Trade names	$ 72	$ 72	5
Non-compete agreement	26	26	5
Technology	135	135	5
Domain Name	18	18	1
Total intangible assets, gross	251	251
Less: accumulated amortization	(63)	(48)
Total intangible assets, net	$ 188	$ 203

(5) EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding and the number of dilutive potential common share equivalents during the period, calculated using the treasury-stock method.

 10 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

The calculation of basic and diluted earnings (loss) per share for the three months ended March 31, 2013 and 2012 is as follows:

	Three months ended March 31,
	2013	2012
Basic:
Net (loss) income applicable to common stockholders	$ (304)	$ 320
Weighted average shares outstanding – basic	31,148.234	30,881,770
Net (loss) income per share – basic	$ (0.01)	$ 0.01
Diluted:
Net (loss) income applicable to common stockholders	$ (304)	$ 320
Weighted average shares outstanding – basic	31,148,234	30,881,770
Dilutive securities	—	155,647
Weighted average shares outstanding – diluted	31,148,234	31,037,417
Net (loss) income per share – diluted	$ (0.01)	$ 0.01

Potential common share equivalents as of March 31, 2012 of 1,187,500 related to certain outstanding stock options, were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive, as the option exercise prices exceeded the average market price of the Company’s common stock. The effect of these shares, if any, on the diluted earnings per share calculation may vary significantly depending on fluctuations in the stock price.

The effects of potential common stock equivalents, related to certain outstanding options for the three months ended March 31, 2013 of 1,237,000 shares have not been included in the computation of diluted net loss per share because the impact of the potential shares would decrease the loss per share.

(6) STOCK-BASED COMPENSATION PLANS

The Company has reserved 3,000,000 shares of common stock for issuance under its 2005 Stock Option Plan (the “Option Plan”). Vesting provisions are determined by the Board of Directors. All stock options under the Option Plan expire no later than ten years from the date of grant.

In the three months ended March 31, 2013 and 2012, the Company recorded compensation expense related to stock options of $36 and $46, respectively. Stock-based compensation recorded in the accompanying condensed consolidated statement of operations for the three months ended March 31, 2013 and 2012 included $4 and $7, respectively, in cost of goods sold and $32 and $39, respectively, in selling, general and administrative expenses.

In the three months ended March 31, 2013 and 2012, the Company did not grant options to employees or any other person for the purchase of shares of common stock.

A summary of stock option activity under the Option Plan for the three months ended March 31, 2013 is presented below:

	Shares Under Option	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at January 1, 2013	1,501,500	$ 0.95
Granted	—	$ —
Exercised	—	$ —
Forfeited	(61,000)	$ 0.80
Outstanding at March 31, 2013	1,440,500	$ 0.95	6.7 years	$ 43
Exercisable at March 31, 2013	874,497	$ 1.09	5.8 years	$ 32

A summary of status of the Company’s non-vested share awards as of and for the three months ended March 31, 2013 is presented below:

 11 

ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

	Nonvested Shares Under Option	Weighted Average Grant Date Fair Value
Non-vested at January 1, 2013	690,877	$ 0.69
Granted	—	$ —
Vested	(87,374)	$ 0.69
Forfeited	(37,500)	$ 0.67
Non-vested at March 31, 2013	566,003	$ 0.69

As of March 31, 2013, the Company had approximately $188 of unrecognized compensation expense related to stock options that will be recognized over a weighted-average period of approximately 2.3 years.

(7) FAIR VALUE MEASUREMENTS

The Company measures certain assets and liabilities pursuant to accounting guidance which establishes a three-tier fair value hierarchy and prioritizes the inputs used in measuring fair value. Theses tiers include:

• Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities.

• Level 2: Observable prices that are based on inputs not quoted on active markets, but corroborated by market data.

• Level 3: Unobservable inputs are used when little or no market data is available.

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2013, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value:

	March 31, 2013	Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	$ 108	$ 108

The fair value of the contingent consideration was determined using a discounted cash flow model at the acquisition date and is revalued at each reporting date or more frequently if circumstances dictate based on changes in the discount periods and rates, changes in the timing and amount of the revenue estimates and changes in probability assumptions with respect to the likelihood of achieving the obligations. The changes in the fair value of this obligation and the accretion expense related to the increase in the net present value of the contingent liabilities was $4 for the three months ended March 31, 2013. No contingent payments were made during the period.

(8) INCOME TAXES

The provision for income taxes is recorded at the end of each interim period based on the Company’s best estimate of its effective income tax rate expected to be applicable for the full fiscal year. The Company’s effective income tax rate for the three months ended March 31, 2013 was 37%. The Company’s income tax expense for the three months ended March 31, 2012 was partially offset by a state income tax refund, which resulted in a lower effective tax rate for the period. The Company paid income taxes of $427 during the first three months of 2013, which was included in income taxes payable at December 31, 2012.

(9) LINE OF CREDIT

The Company has an asset-backed revolving credit facility of up to $7,000, subject to reserves and reductions to the extent of changes in the Company’s asset borrowing base, under a Loan and Security Agreement (the “Doral Agreement”) with Doral Healthcare Finance, a division of Doral Money, Inc. Borrowings under the Doral Agreement bear interest at a variable rate equal to the greater of (i) the British Bankers’ Association LIBOR rate as published in The Wall Street Journal for dollar deposits in the amount of $1,000 with a maturity of one month or (ii) 3% per annum, plus, in each case, a margin of 3.75%. The Doral agreement requires monthly interest payments in arrears on the first date of each month. The Doral Agreement will mature on December 19, 2014. The Company may terminate the Doral Agreement at any time prior to the maturity date upon thirty days’ prior written notice and upon payment in full of all outstanding obligations under the Doral Agreement. If the Company terminates the Doral Agreement, the Company must

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ZYNEX, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(AMOUNTS IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

THREE MONTHS ENDED MARCH 31, 2013 AND 2012

pay a specified early termination fee. As of March 31, 2013, $6,602 was outstanding under the Doral Agreement and $398 was available for borrowing based on the Company’s current borrowing base.

The Doral Agreement requires a lockbox arrangement whereby all receipts are swept daily to reduce borrowings outstanding. This arrangement causes the Doral Agreement to be classified as a current liability.

As of March 31, 2013, the effective interest rate under the Doral Agreement was 8% (7% interest rate and 1% fees).

The Doral Agreement contains certain customary restrictive and financial covenants for asset-backed credit facilities. As of March 31, 2013, the Company was in compliance with the financial covenants under the Doral Agreement.

(10) CONCENTRATIONS

The Company sourced approximately 24% of its electrotherapy products from one contract manufacturer during the three months ended March 31, 2013. Management believes that its relationships with suppliers are strong; however, if necessary these relationships can be replaced. If the relationships were to be replaced, there may be a short-term disruption to operations, a period of time in which products may not be available and additional expenses may be incurred.

The Company had receivables from a private health insurance carrier at March 31, 2013 that made up approximately 16% of the net accounts receivable balance. The same private health insurance carrier made up approximately 22% of net accounts receivable at December 31, 2012.

(11) LITIGATION

From time to time, the Company may become party to litigation and other claims in the ordinary course of business. To the extent that such claims and litigation arise, management would provide for them if losses are determined to be both probable and estimable.

The Company is currently not a party to any material pending legal proceedings.

(12) SEGMENT REPORTING

At March 31, 2013, the Company has determined that it has three reporting segments comprised of the following subsidiaries, ZMI and ZBC, ZND and ZEU, and ZMS. This determination was made based on the nature of the products and services offered to customers or the nature of the function in the organization. The accounting policies for each of these segments are the same as those described in Note 2, and inter-segment transactions are eliminated.

Net revenue was primarily generated from sales in the United States.

	ZMI & ZBC	ZND & ZEU	ZMS	TOTAL
THREE MONTHS ENDED MARCH 31, 2013
Sales	$ 7,606	$ 62	$ —	$ 7,668
Gross profit	5,430	47	—	5,477
Total assets	24,142	625	24	24,791
THREE MONTHS ENDED MARCH 31, 2012
Sales	$ 8,869	75	$ —	$ 8,944
Gross profit	7,081	50	—	7,131
Total assets	23,098	781	9	23,888

                       

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Notice Regarding Forward-Looking Statements

This quarterly report contains statements that are forward-looking, such as statements relating to plans for future expansion and other business development activities, as well as the impact of reimbursement trends, other capital spending and financing sources. Such forward-looking information involves important risks and uncertainties that could significantly affect anticipated results in the future and, accordingly, such results may differ from those expressed in any forward-looking statements made by or on behalf of the Company. These risks include the need for additional capital in order to grow our business, our ability to engage additional sales representatives, the need to obtain U.S. Food and Drug Administration (“FDA”) clearance and Certificate European (“CE”) marking of new products, the acceptance of new products as well as existing products by doctors and hospitals, our dependence on the reimbursement from insurance companies for products sold or rented to our customers, acceptance of our products by health insurance providers for reimbursement, larger competitors with greater financial resources, the need to keep pace with technological changes, our dependence on third-party manufacturers to produce our goods on time and to our specifications, implementation of our sales strategy including a strong direct sales force, and other risks described in our Annual Report on Form 10-K for the year ended December 31, 2012.

These interim financial statements should be read in conjunction with the annual audited financial statements, accounting policies and financial notes thereto, included in the Company’s 2012 Annual Report on Form 10-K, which has previously been filed with the Securities and Exchange Commission.

The Company currently has five subsidiaries; ZynexMedical, Inc. (ZMI), Zynex NeuroDiagnostics, Inc. (ZND), Zynex Monitoring Solutions Inc. (ZMS), Zynex Billing and Consulting, LLC (ZBC) and Zynex Europe, Aps (ZEU).  

RESULTS OF OPERATIONS (Amounts in thousands):

Revenue

Our products may be rented on a monthly basis or purchased. Renters and purchasers are primarily patients and healthcare insurance providers on behalf of patients. Our products may also be purchased by dealers. If a patient is covered by health insurance, the Third-party Payor typically determines whether the patient will rent or purchase a unit depending on the anticipated time period for its use. If contractually arranged, a rental continues until an amount equal to the purchase price is paid when we transfer ownership of the product to the patient and cease rental charges. We also sell consumable supplies, consisting primarily of surface electrodes and batteries that are used in conjunction with our electrotherapy products.  

Revenue is reported net, after adjustments for estimated insurance company reimbursement deductions. The deductions are known throughout the health care industry as “contractual adjustments” whereby the healthcare insurers unilaterally reduce the amount they reimburse for our products as compared to the rental rates and sales prices charged by us. The deductions from gross revenue also take into account the estimated denials of claims for our products placed with patients which may affect collectability. See Note 2 to the Unaudited Condensed Consolidated Financial Statements in this quarterly report for a more complete explanation of our revenue recognition policies.

During the first quarter of 2013, we encountered industry challenges, specifically related to health care reform (specifically the Affordable Care Act) and business seasonality that affected demand in our core business, ZMI. The Affordable Care Act dramatically alters the United States healthcare system and is intended to decrease the number of uninsured Americans and reduce the overall cost of health care. The Affordable Care Act attempts to achieve these goals by, among other things, requiring most Americans to obtain health insurance, expanding Medicaid eligibility, reducing Medicare payments to providers, expanding the Medicare program's use of value-based purchasing programs and instituting certain private health insurance reforms. Although a majority of the measures contained in the Affordable Care Act do not take effect until 2014, certain measures have already become effective or will be implemented in 2013, and additional government policies designed to reduce the overall cost of the Medicare program through reduced reimbursement and reduced coverage for certain items and services have already become effective. We believe uncertainty exists at the medical practitioner level related to changes in health care, which has delayed prescriptions/orders for our ZMI business. It is difficult to predict the full impact of the Affordable Care Act because of its complexity, lack of implementing regulations and interpretive guidance, gradual and potentially delayed implementation, future potential legal challenges, and possible repeal and/or amendment, as well as the inability to foresee how individuals and businesses will respond to the choices afforded them by the Affordable Care Act. Further complicating predictions regarding the impact of the Affordable Care Act is uncertainty surrounding individual State’s decisions to expand Medicaid, as contemplated by the Affordable Care Act, but made optional by the Supreme Court. As a result, it is difficult to predict the full impact that the Affordable Care Act will have on our revenue and results of

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operations. The first quarter of every year also presents a high degree of seasonality due to insurance ‘resets’ of patient deductibles, which tends to slow reimbursement and orders for our ZMI business.

In an effort to minimize the impact of health care reform, we made modifications to our direct sales force within our Zynex Medical business, including reducing the number of sales employees, modifying sales compensation packages and increasing the level of sales force training as it relates to health care reform. We believe these efforts helped us to reduce our overall selling, general and administrative costs for the first quarter of 2013, but also negatively impacted the amount of orders that were received, contributing to a decrease in net revenue for the period.

We believe the impact from these changes is short-term and that our overall market position in the electrotherapy market remains strong; however we cannot provide any assurances. Additionally, we began expanding our sales force within our ZND business division and recently entered into a sales and distribution contract for electroencephalography (EEG) and sleep diagnostics products, which are products sold to businesses and not reliant on insurance reimbursement. We believe the investments made in our other divisions will help diversify our business and provide further platforms for future growth.

Total Net Revenue (Rental and Sales).

	Three months ended
Total net revenue by type (in thousands):	March 31, 2013	March 31, 2012
Net Rental Revenue	$ 1,679	$ 2,062
Sales of electrotherapy and other privately-labeled distributed products	2,091	3,058
Sales of recurring consumable supplies	3,898	3,824
Total Net Sales Revenue	5,989	6,882
Total Net Revenue	$ 7,668	$ 8,944

Total net revenue decreased $1,276, or 14%, to $7,668 for the three months ended March 31, 2013, from $8,944 for the three months ended March 31, 2012.

The decrease was primarily due to a 32% decrease in prescriptions (orders) for our electrotherapy products for the three months ended March 31, 2013 as compared to the same period in 2012. The overall decrease in total net revenue for the three months ended March 31, 2013 was impacted by industry conditions driven by health care reform and changes made to our ZMI sales distribution channel, as discussed above.  

Orders for our products lead to (1) rental income, which we anticipate receiving on a recurring basis over the time patients use our products, (2) direct sales of our products, and (3) corresponding recurring sales of electrodes and other supplies for our products, all of which are subject to our ability to collect payment due to contractual adjustments by insurers.  Our products are subject to reimbursement policies of Third-party Payors, which we may not be able to determine with any certainty.  These Third-party Payor policies typically dictate whether our products will be purchased or rented.  Therefore, our revenue mix of net rental and net sales revenue may fluctuate from time to time and may not be an indicator of the overall demand for our products.  We are unable to determine if the reimbursement policy trend towards purchasing rather than renting our products will continue or change in the future, as it is based on many market and Third-party Payor factors.  Shifts in our revenue mix may also have a material impact on our overall gross margin, as product sales result in a lower gross profit because their cost of sales is higher than that from rentals (cost of sales associated with rentals is primarily depreciation).  

Net Rental Revenue

Net Rental Revenue decreased $383, or 19%, to $1,679 for the three months ended March 31, 2013, from $2,062 for the three months ended March 31, 2012.  

Net Rental Revenue for the three months ended March 31, 2013 represented 22% of total net revenue compared to 23% for the three months ended March 31, 2012. The decrease in net rental revenue for the three months ended March 31, 2013 is primarily due to the decrease in orders received for the first quarter of 2013 (as discussed above) as compared to the same quarter for 2012 and the continued shift in our revenue mix (from rentals to direct purchase).

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Net Sales Revenue

Net Sales Revenue decreased $893, or 13%, to $5,989 for the three months ended March 31, 2013, from $6,882 for the three months ended March 31, 2012.  

Net Sales Revenue for the three months ended March 31, 2013 represented 78% of total net revenue compared to 77% for the three months ended March 31, 2012.  Net Sales Revenue is comprised of two primary components: sales of electrotherapy devices and private-labeled distributed products, representing 27% of total net revenue for the three months ended March 31, 2013, and sales of recurring device consumables (batteries and electrodes), representing 51% of total net revenue for the three months ended March 31, 2013.  This compares to the sale of electrotherapy devices and private-labeled distributed products representing 34% of total net revenue for the three months ended March 31, 2012 and sale of device consumables representing 43% of total net revenue for the three months ended March 31, 2012.  The decrease in Net Sales Revenue for the three months ended March 31, 2013 was primarily due to a decrease in orders (as discussed above) over the same three month periods in 2012 and the continued change in Third-party Payor reimbursement trends, in favor of purchasing products rather than renting them. Because of the number of units in the field we experienced a 2% increase of sales of our recurring consumable supplies over the comparable three month periods in 2012.

Gross Profit

Total gross profit for the three months ended March 31, 2013 was $5,477 (or 71% of total net revenue) compared to $7,131 (or 80% of total net revenue) in the three months ended March 31, 2012.

Total gross profit percentage for the three months ended March 31, 2013 decreased 9% from the three months ended March 31, 2013.  The decrease in the gross profit percentage for the three months ended March 31, 2013 was primarily due to lower sales volume reported in the first three months of 2013, as we had less net revenue to cover fixed costs of manufacturing.

Selling, General and Administrative (“SG&A”)

Total SG&A expenses decreased $812, or 12%, to $5,833 for the three months ended March 31, 2013 from $6,645 for the three months ended March 31, 2012.

A summary of expenses by department for the three months ended March 31, 2013 and 2012 is provided below:

	Three months ended
SG&A expense by department	March 31, 2013	% of Net Revenue	March 31, 2012	% of Net Revenue
Sales & Marketing	$ 1,906	25%	$ 3,095	35%
Reimbursement & Billing	2,231	29%	2,034	23%
General & Administrative	1,356	18%	1,183	13%
Engineering & Operations	340	4%	333	4%
Total SG&A expenses	$ 5,833	76%	$ 6,645	74%

Our sales and marketing expenses decreased by $1,189 for the three months ended March 31, 2013 over the same period in 2012, primarily due to less commissions incurred in the current period (total orders decreased 32% for the three months ended March 31, 2013 over the same period in 2012) and changes made to our sales force, which included a reduction in direct sales employees and changes to compensation packages. Our reimbursement and billing expenses increased by $134 for the three months ended March 31, 2013 as compared to the three months ended March 31, 2012, due to additional investments made in our reimbursement and billing department, consisting primarily of incremental system related expenses.  Our reimbursement and billing department relies on personnel, processes and systems to negotiate and collect from Third-party Payors. Therefore, we continue to evaluate and monitor the infrastructure in this department, as it is our primary function for cash collections, which may result in increased expenses in future periods.  Improvements in our reimbursement and billing function may lead to higher revenues, as better negotiations and collection efforts with Third-party Payors could result in an increase to our aggregate accounts receivable collection percentage. Our general and administrative expenses increased by $173 for the three months ended March 31, 2013 over the same period in 2012, which was primarily the result of additional administrative infrastructure, including the addition of incremental regulatory personnel and administrative personnel to support the sales efforts in our ZND division.  Engineering and operations decreased by $7 for the three months ended March 31, 2013 over the same period in 2012.

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Other Expense

Other expense is comprised of interest expense and other expense.

Interest expense for the three months ended March 31, 2013 was $130, compared to $93 for the same period in 2012. The increase in interest expense is a result of our increased use of our revolving line of credit during the first three months of 2013, which resulted in a revolving line of credit balance of $6,602 as of March 31, 2013, versus a balance of $4,385 as of March 31, 2012.  

Other expense for the three months ended March 31, 2013 was $6 as compared to zero for the three months ended March 31, 2012.  

Income Tax Benefit (Expense)

Income tax benefit for the three months ended March 31, 2013 was $182 compared to income tax expense of ($73) for the same period in 2012.  Income tax benefit for the three months ended March 31, 2013 was the result of the Company generating a loss before income tax of $492. Income tax expense for the three months ended March 31, 2012 was the result of the Company generating income before income tax of $393. The provision for income taxes is recorded at the end of each interim period passed on the Company’s best estimate of its effective income tax rate expected to the applicable for the full fiscal year. The Company’s effective income tax rate for the three months ended March 31, 2013 was 37% The Company’s income tax expense for the three months ended March 31, 2012 was partially offset by a state income tax refund, which resulted in a lower effective tax rate for the period.

LIQUIDITY AND CAPITAL RESOURCES:

Line of Credit

We have an asset-backed revolving credit facility of up to $7,000, subject to reserves and reductions to the extent of changes in our asset borrowing base, under a Loan and Security Agreement (the “Doral Agreement”) with Doral Healthcare Finance, a division of Doral Money, Inc. Borrowings under the Doral Agreement bear interest at a variable rate equal to the greater of (i) the British Bankers’ Association LIBOR rate as published in The Wall Street Journal for dollar deposits in the amount of $1,000 with a maturity of one month or (ii) 3% per annum, plus, in each case, a margin of 3.75%. The Doral Agreement will mature on December 19, 2014. As of March 31, 2013, the effective interest rate under the Doral Agreement was 8% (7% interest rate and 1% fees). We may terminate the Doral Agreement at any time prior to the maturity date upon thirty (30) days’ prior written notice and upon payment in full of all outstanding obligations under the Doral Agreement. If we terminate the Doral Agreement, we must pay a specified early termination fee.

The availability of the line of credit depends upon our ongoing compliance with convenants, representations and warranties in the Doral Agreement and borrowing base limitations. Although the maximum amount of the line of credit is $7,000, the amount available for borrowing under the line of credit is subject to a ceiling based upon eligible receivables and other limitations, which may limit our ability to borrow the maximum amount. As of March 31, 2013, $6,602 was outstanding under the Doral Agreement and $398 was available for borrowing based on our current borrowing base.

The Doral Agreement also contains customary restrictive and financial covenants for asset-backed revolving credit facilities. As of March 31, 2013, we were in compliance with the financial covenants under the Doral Agreement.  

Limited Liquidity

Cash at March 31, 2013 was $681, compared to cash at December 31, 2012 of $823.

Cash used in operating activities was $993 for the three months ended March 31, 2013 compared to $770 of cash used in operating activities for the three months ended March 31, 2012. The primary uses of cash in operations for the three months ended March 31, 2013 was the result of the net loss reported for the period, decreases in accounts payable, accrued expenses and income taxes payable, which were partially offset by a decrease in accounts receivable.  The primary uses of cash in operations for the three months ended March 31, 2012 was the result of decreases in collections on accounts receivable, including the impact of the industry Version 5010 electronic claims processing conversion, and increases in inventory required to support our growing revenue, offset by increased net income and adjustments for non-cash items.  

Cash provided by investing activities for the three months ended March 31, 2013 was $192 compared to cash used in investing activities of $340 for the three months ended March 31, 2012. Cash provided by investing activities for the three months ended March 31, 2013 primarily represents an increase in cash flows relating to the change in the inventory held for rental, which reflects the change in our revenue mix towards selling rather than renting our products, offset by purchase of equipment.  Cash used in investing activities for the three months ended March 31, 2012 primarily represents the purchase and in-house production of rental products, purchases of capital equipment and the purchase of the assets of NeuroDyne Medical Corp. (See Note 5 of our Consolidated Financial Statements in our Annual Report on Form 10-K for the year-ended December 31, 2012 for additional information).  

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Cash provided by financing activities was $659 for the three months ended March 31, 2013 compared with cash provided by financing activities of $1,063 for the three months ended March 31, 2012. The primary financing sources of cash for the three months ended March 31, 2013 and 2012 were net borrowings under the line of credit, partially offset by payments on capital lease obligations and deferred financing fees.

Our limited liquidity is primarily a result of (a) the high level of outstanding accounts receivable because of deferred payment practices of Third-party Payors, (b) the required high levels of inventory kept with sales representatives that are standard in the electrotherapy industry, (c) the need for expenditures to continue to enhance the Company’s internal billing processes ahead of and in anticipation of revenue growth, (d) the delayed cost recovery inherent in rental transactions, and (e) expenditures required for on-going product development. In addition, during the first quarter of 2013, we encountered industry challenges, including health care reform and the implementation of the Affordable Care Act that negatively affected demand in our core business, ZMI. Limited liquidity may restrict our ability to carry out our current business plans and curtail our revenue growth.

For the three months ended March 31, 2013 and 2012, the Company reported negative cash flows from operations of $993 and $770, respectively. In addition, the Company’s line of credit increased from $5,906 at December 31, 2012 to $6,602 at March 31, 2013, primarily driven by working capital requirements. Maximum borrowings under the line of credit are $7,000. Management developed the Company’s operating plans for 2013 to emphasize cash flow, under which the Company is making operational billing changes to increase cash collections as well as implementing various cost modifications to reduce expenses. Management believes that the Company’s cash flows from operating activities and borrowing available under the line of credit will be sufficient to fund cash requirements through March 31, 2014.

Our long-term business plan contemplates organic growth in revenues and possible acquisitions.  Therefore, in order to support a growth in revenue, we require, among other things, funds for the purchases of equipment (primarily for rental inventory), funds for the purchases of inventory, the payment of commissions to sales representatives, and the increase in office lease payments (for our new, larger building) to support the higher level of operations.  On March 9, 2012, in an effort to diversify our product line and penetrate markets that our ZND subsidiary serves, we acquired substantially all NeuroDyne Medical Corp’s assets (See Note 5 of our Consolidated Financial Statements in our Annual Report on Form 10-K for the year-ended December 31, 2012 for additional information).  Matters relating to the acquisition (including integration, operation and sales) have and will continue to require commitments of time and resources, which may detract and impede growth in other areas of our business. The NeuroDyne asset purchase agreement provides for a seven year contingent consideration, based on a declining percentage of net revenue generated by NeuroDyne products. The potential amount of all future payments that we could be required to make under the contingent consideration arrangement is between $0 and $190, based on a percentage of net revenue over the next six years (See Note 5 of our Consolidated Financial Statements in our Annual Report on Form 10-K for the year-ended December 31, 2012 for additional information).

There is no assurance that our operations and available borrowings will provide enough cash for operating requirements or for increases in our inventory of products, as needed, for growth. We may need to seek external financing through the issuance of debt or sale of equity, and we are not certain whether any such financing would be available to us on acceptable terms or at all. Any additional debt would require the approval of Doral Healthcare Finance.

Our dependence on operating cash flow means that risks involved in our business can significantly affect our liquidity. Contingencies such as unanticipated shortfalls in revenues or increases in expenses could affect our projected revenue, cash flows from operations and liquidity which may force us to curtail our operating plan or impede our growth.

We frequently receive, and expect to continue to receive, refund requests from insurance providers relating to specific patients and dates of service. Billing and reimbursement disputes are very common in our industry. These requests are sometimes related to a few patients and other times include a significant number of refund claims in a single request. We review and evaluate these requests and determine if any refund is appropriate. We also review claims where we are rebilling or pursuing additional reimbursement from that insurance provider. We frequently have significant offsets against such refund requests which may result in amounts that are due to us in excess of the amounts of refunds requested by the insurance providers. Therefore, at the time of receipt of such refund requests we are generally unable to determine if a refund request is valid and should be accrued as a liability.

As of March 31, 2013, we believe we have an adequate allowance for contractual adjustments relating to known insurance disputes and refund requests. However, no assurances can be given with respect to such estimates of reimbursements and offsets or the ultimate outcome of any refund requests.

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CRITICAL ACCOUNTING POLICIES AND ESTIMATES:

There are several accounting policies that involve management’s judgments and estimates and are critical to understanding our historical and future performance, as these policies and estimates affect the reported amounts of revenue and other significant areas in our reported financial statements.

Please refer to the “Management’s Discussion and Analysis of Financial Condition and Results of Operation” located within our Annual Report on Form 10-K for the year ended December 31, 2012 filed with the Securities and Exchange Commission on March 28, 2013, and Note 2 to the Unaudited Condensed Consolidated Financial Statements in this Quarterly Report for further discussion of our “Critical Accounting Policies.”

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The Company, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, performed an evaluation of the effectiveness of the Company’s disclosure controls and procedures as of March 31, 2013. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of March 31, 2013.

Changes in Internal Control Over Financial Reporting

There was no change in the Company’s internal control over financial reporting during the quarter ended March 31, 2013 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are not a party to any material pending legal proceedings.

ITEM 1A. RISK FACTORS

Readers are encouraged to carefully consider the risk factors discussed in Part I, Item 1A. “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2012 (“2012 Annual Report”), which could materially affect our business, financial condition or future results. The risks described therein are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or operating results. There have been no material changes to the risk factors contained in our 2012 Annual Report and our Quarterly Report on Form 10-Q for the three months ended March 31, 2013.  The risk factor set forth below supplements and updates the risk factors previously disclosed in the 2012 Annual Report:

THE PATIENT PROTECTION AND ACCOUNTABILITY ACT OF 2010 WILL HAVE AN IMPACT ON OUR BUSINESS WHICH MAY BE IN PART BENEFICIAL AND IN PART DETRIMENTAL.

In March 2010, broad federal health care reform legislation was enacted in the United States. This legislation did not become effective immediately in total, and may be modified prior to the effective date of some provisions. This legislation could have an impact on our business in a variety of ways including increased number of Medicaid recipients, increased number of individuals with commercial insurance, additional audits conducted by public health insurance plans such as Medicaid and Medicare, changes to the rules that govern employer group health insurance and other factors that influence the acquisition and use of health insurance from private and public payors. We believe the new healthcare legislation has caused uncertainty with prescribers, which we believe contributed to our drop in orders and revenue during the first quarter of 2013. We are currently unable to determine whether such trend will continue in future periods or whether the health care reform legislation will have other adverse consequences to our business and results of operations. To the extent prescribers write fewer prescriptions for our products, due to the new law or otherwise, our revenue and profitability will be materially adversely affected.

Effective in 2013, there will be a 2.3% excise tax on the first sale of medical devices, with certain exceptions. We do not know if this tax, to the extent applicable to any of our products and transactions, can be passed on to third-party payors.

Other reform measures changed the timeline to submit Medicare claims to one year from the date of service. We must expend resources to evaluate and potentially adjust our claims processing procedure to comply with Medicare’s faster filing requirements or risk denials of otherwise appropriate claims and the resulting diminished revenue.

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Other reform measures were passed that allow Centers for Medicare and Medicaid (“CMS”) to place a moratorium on new enrollment of Medicare suppliers and to suspend payment to suppliers based upon a credible allegation of fraud from any source. It is unclear if CMS will use this new authority liberally, potentially impacting our cash-flow and revenue. Additional penalties were added for the knowing and improper retention of overpayments collected from government programs such as Medicare and Medicaid. Failure to identify and return overpayments within a specified time-frame can also implicate the federal False Claims Act with potential for fines and penalties all which could have a material adverse effect on our results of operations and cash flows.

ITEM 6. EXHIBITS

Exhibit Number	Description
3.1	Amended and Restated Articles of Incorporation (incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed on October 7, 2008).
3.2	Amended and Restated Bylaws (incorporated by reference to Exhibit 10.2 of the Company’s Current Report on Form 8-K filed on October 7, 2008).
31.1*	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a) as Adopted Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
31.2*	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a) as Adopted Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
32.1*	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following financial statements, formatted in XBRL: (i) Condensed Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012, (ii) Condensed Consolidated Statements of Operations for the three months ended March 31, 2013 and 2012 (iii) Condensed  Consolidated Statements of Stockholders’ Equity as of March 31, 2013 (iv) Condensed  Consolidated Statements of Cash Flows for the three months ended March 31, 2013 and 2012 and (v) Notes to Condensed Consolidated Financial Statements. The information in Exhibit 101 is ”furnished” and not “filed”, as provided in Rule 402 of Regulation S-T.

* Filed herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	ZYNEX, INC.
Dated: May 13, 2013	/s/ Thomas Sandgaard
	Thomas Sandgaard
	President, Chief Executive Officer and Treasurer

Dated: May 13, 2013	/s/ Anthony A. Scalese
	Anthony A. Scalese
	Chief Financial Officer

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EX-31

Exhibit 31.1

CERTIFICATION

I, Thomas Sandgaard, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Zynex, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated:  May 13, 2013

/s/ THOMAS SANDGAARD

Thomas Sandgaard

President and Chief Executive Officer

Principal Executive Officer

EX-31

Exhibit 31.2

CERTIFICATION

I, Anthony A. Scalese, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Zynex, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated:  May 13, 2013

/s/ ANTHONY A. SCALESE

Anthony A. Scalese

Chief Financial Officer

Principal Financial Officer

EX-32

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

Each of the undersigned hereby certifies, for the purposes of Section 1350 of Chapter 63 of Title 18 of the United States Code, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as an officer of Zynex, Inc. (“Zynex”), that to his knowledge:

1. Zynex’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013 (the “10-Q Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the 10-Q Report fairly presents, in all material respects, the financial condition and results of operations of Zynex for the period covered by the 10-Q Report.

Dated:  May 13, 2013

/s/ THOMAS SANDGAARD

Thomas Sandgaard

President and Chief Executive Officer

/s/ ANTHONY A. SCALESE

Anthony A. Scalese

Chief Financial Officer

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Concentrations (Details)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Concentrations (Textual) [Abstract]
Purchased electrotherapy products Percentage	24.00%
Accounts receivable received by the company from a private health insurance company	16.00%	22.00%

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Stock-Based Compensation Plans (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2013
Summary of status of the Company's non-vested share awards
Nonvested shares under option at January 1, 2013	690,877
Nonvested shares under option, granted
Nonvested shares under option, vested	(87,374)
Nonvested shares under option, forfeited	(37,500)
Nonvested shares under option at March 31, 2013	566,003
Weighted average grant date fair value at January 1, 2013	$ 0.69
Weighted average grant date fair value, granted
Weighted average grant date fair value, vested	$ 0.69
Weighted average grant date fair value, forfeited	$ 0.67
Weighted average grant date fair value at March 31, 2013	$ 0.69

XML

Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2013

Summarized Information about Reported Segment

Net revenue was primarily generated from sales in the United States.

	ZMI& ZBC	ZND& ZEU	ZMS	TOTAL
THREE MONTHS ENDED MARCH 31, 2013
Sales	$7,606	$62	$-	$7,668
Gross profit	5,430	47	-	5,477
Total assets	24,142	625	24	24,791
THREE MONTHS ENDED MARCH 31, 2012
Sales	$8,869	75	$-	$8,944
Gross profit	7,081	50	-	7,131
Total assets	23,098	781	9	23,888

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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income taxes (Textual) [Abstract]
Statutory rate	37.00%
Income taxes paid	$ 427	$ 65

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Property and Equipment

3 Months Ended

Mar. 31, 2013

Property and Equipment

(3)PROPERTY AND EQUIPMENT

Property and equipment as of March31, 2013 and December31, 2012 consist of the following:

	March31, 2013	December31, 2012	Useful lives
Office furniture and equipment	$1,960	$1,836	3-7years
Rental inventory	2,772	3,147	5 years
Vehicles	76	76	5 years
Leasehold improvements	375	375	2-6 years
Assembly equipment	171	168	7 years
	5,354	5,602
Less accumulated depreciation	(1,835)	(1,751)
	$3,519	$3,851

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Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Acquisition of intangible assets
Total intangible assets, gross	$ 251	$ 251
Less: accumulated amortization	(63)	(48)
Total intangible assets, net	188	203
Trade names
Acquisition of intangible assets
Total intangible assets, gross	72	72
Amortization Life Years	5 years
Non-compete agreement
Acquisition of intangible assets
Total intangible assets, gross	26	26
Amortization Life Years	5 years
Technology
Acquisition of intangible assets
Total intangible assets, gross	135	135
Amortization Life Years	5 years
Domain name
Acquisition of intangible assets
Total intangible assets, gross	$ 18	$ 18
Amortization Life Years	1 year

XML

Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	$ 5,354	$ 5,602
Less accumulated depreciation	(1,835)	(1,751)
Property and Equipment, Net	3,519	3,851
Office furniture and equipment
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	1,960	1,836
Office furniture and equipment | Minimum
Property Plant And Equipment [Line Items]
Property and Equipment Useful Life	3 years
Office furniture and equipment | Maximum
Property Plant And Equipment [Line Items]
Property and Equipment Useful Life	7 years
Rental inventory
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	2,772	3,147
Property and Equipment Useful Life	5 years
Vehicles
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	76	76
Property and Equipment Useful Life	5 years
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	375	375
Leasehold improvements | Minimum
Property Plant And Equipment [Line Items]
Property and Equipment Useful Life	2 years
Leasehold improvements | Maximum
Property Plant And Equipment [Line Items]
Property and Equipment Useful Life	6 years
Assembly equipment
Property Plant And Equipment [Line Items]
Property and Equipment, Gross	$ 171	$ 168
Property and Equipment Useful Life	7 years

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Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Basic:
Net (loss) income applicable to common stockholders	$ (304)	$ 320
Weighted average shares outstanding – basic	31,148,234	30,881,770
Net (loss) income per share – basic	$ (0.01)	$ 0.01
Diluted:
Net (loss) income applicable to common stockholders	$ (304)	$ 320
Weighted average shares outstanding – basic	31,148,234	30,881,770
Dilutive securities		155,647
Weighted average shares outstanding – diluted	31,148,234	31,037,417
Net (loss) income per share – diluted	$ (0.01)	$ 0.01

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Earnings Per Share (Details Textual)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share (Textual) [Abstract]
Antidilutive securities excluded from computation of earnings per share	1,237,000	1,187,500

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2013

Significant Accounting Policies

(2)SIGNIFICANT ACCOUNTING POLICIES

PRINCIPLES OF CONSOLIDATION

The accompanying unaudited condensed consolidated financial statements include the accounts of Zynex, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

NONCONTROLLING INTEREST

Noncontrolling interest in the equity of a subsidiary is accounted for and reported as shareholders equity. Noncontrolling interest represents the 20% ownership in the Company’s majority-owned subsidiary, ZBC. In 2012, the noncontrolling interest member contributed $10 of property and equipment to ZBC.

USE OF ESTIMATES

Preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The most significant management estimates used in the preparation of the accompanying consolidated financial statements are associated with the allowance for contractual adjustments and uncollectible accounts receivable, the reserve for obsolete and damaged inventory, stock-based compensation, valuation of goodwill and other long-lived assets, and income taxes.

REVENUE RECOGNITION, ALLOWANCE FOR CONTRACTUAL ADJUSTMENTS AND COLLECTIBILITY

The Company recognizes revenue when each of the following four conditions are met 1) a contract or sales arrangement exists 2) products have been shipped and title has transferred, or rental services have been rendered 3) the price of the products or services is fixed or determinable and 4) collectability is reasonably assured. Accordingly, the Company recognizes revenue, both rental and sales, when products have been delivered to the patient and the patient’s insurance (if the patient has insurance) has been verified. For medical products that are sold from inventories consigned at clinic locations, the Company recognizes revenue when it receives notice that the product has been prescribed and delivered to the patient and the patient’s insurance coverage has been verified or preauthorization has been obtained from the insurance company, when required. Revenue from the rental of products is normally on a month-to-month basis and is recognized ratably over the products’ rental period. Revenue from sales to distributors is recognized when the Company ships its products, which fulfills its order and transfers title. Revenue is reported net, after adjustments for estimated insurance company or governmental agency (collectively “Third-party Payors”) reimbursement deductions. The deductions are known throughout the health care industry as “contractual adjustments” whereby the Third-party Payors unilaterally reduce the amount they reimburse for the Company’s products.

A significant portion of the Company’s revenues are derived, and the related receivables are due, from Third-party Payors. The nature of these receivables within this industry has typically resulted in long collection cycles. The process of determining what products will be reimbursed by Third-party Payors and the amounts that they will reimburse is complex and depends on conditions and procedures that vary among providers and may change from time to time. The Company maintains an allowance for contractual adjustments and records additions to the allowance to account for the risk of nonpayment. Contractual adjustments result from reimbursements from Third-party Payors that are less than amounts claimed or where the amount claimed by the Company exceeds the Third-party Payors’ usual, customary and reasonable reimbursement rate. The Company determines the amount of the allowance, and adjusts it at the end of each reporting period, based on a number of factors, including historical rates of collection, the aging of the receivables, trends in the historical rates of collection and current relationships and experience with the Third-party Payors. If the rates of collection of past-due receivables recorded for previous fiscal periods changes, or if there is a trend in the rates of collection on those receivables, the Company may be required to change the rate at which it provides for additions to the allowance. A change in the rates of the Company’s collections can result from a number of factors, including experience and training of billing personnel, changes in the reimbursement policies or practices of Third-party Payors, or changes in industry rates of reimbursement. Accordingly, changes to the allowance for contractual adjustments, which are recorded in the income statement as a reduction of revenue, have historically fluctuated and may continue to fluctuate significantly from quarter to quarter.

Due to the nature of the industry and the reimbursement environment in which we operate, estimates are required to record net revenues and accounts receivable at their net realizable values. Inherent in these estimates is the risk that they will have to be revised or updated as additional information becomes available. Specifically, the complexity of third-party billing arrangements and the uncertainty of reimbursement amounts for certain products or services from payors or an unanticipated requirement to refund payments previously received may result in adjustments to amounts originally recorded. Due to continuing changes in the health care industry and third-party reimbursement, as well as changes in our billing practices to increase cash collections, it is possible that management’s estimates could change in the near term, which could have an impact on our results of operations and cash flows. Any differences between estimated settlements and final determinations are reflected as an increase or a reduction to revenue in the period when such final determinations are known.

The Company frequently receives refund requests from insurance providers relating to specific patients and dates of service. Billing and reimbursement disputes are very common in the Company’s industry. These requests are sometimes related to a limited number of patients or products; at other times, they include a significant number of refund claims in a single request. The Company reviews and evaluates these requests and determines if any refund request is appropriate. The Company also reviews these refund claims when it is rebilling or pursuing reimbursement from that insurance provider. The Company frequently has significant offsets against such refund requests, and sometimes amounts are due to the Company in excess of the amounts of refunds requested by the insurance providers. Therefore, at the time of receipt of such refund requests, the Company is generally unable to determine if a refund request is valid and should be accrued.

As of March31, 2013, the Company believes it has an adequate allowance for contractual adjustments relating to all known insurance disputes and refund requests. However, no assurances can be given with respect to such estimates of reimbursements and offsets or the ultimate outcome of any refund requests.

In addition to the allowance for contractual adjustments, the Company records an allowance for uncollectible accounts receivable. Uncollectible accounts receivable are primarily a result of the following: non-payment from patients who have been direct billed for co-payments or deductibles, lack of appropriate insurance coverage and disallowances of charges by Third-party Payors. If there is a change to a material insurance provider contract or policy, application by a provider, a decline in the economic condition of providers or a significant turnover of Company billing personnel resulting in diminished collection effectiveness, the estimate of the allowance for uncollectible accounts receivable may not be adequate and may result in an increase in the future.

At March31, 2013 and December31, 2012, the allowance for uncollectible accounts receivable is $1,837.

FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company’s financial instruments at March31, 2013 include cash, accounts receivable and accounts payable, for which current carrying amounts approximate fair value due to their short-term nature. Financial instruments at March31, 2013 also include the line of credit and notes payable, the carrying value of which approximates fair value because the interest rates on the outstanding borrowings are at rates that approximate market rates for borrowings with similar terms and average maturities.

INVENTORY

Inventories, which primarily represent finished goods, are valued at the lower of cost (average) or market. Finished goods include products held at the Company’s headquarters and at different locations by health care providers or other parties for rental or sale to patients. Total (gross) inventories at March31, 2013 included $6,265 of finished goods, $526 of parts, and $513 of supplies.

The Company monitors inventory for turnover and obsolescence, and records losses for excess and obsolete inventory as appropriate. At March31, 2013, the Company had an allowance for obsolete and damaged inventory of approximately $980. The allowance for obsolete and damaged inventory was approximately $1,181 at December31, 2012. The Company had $2,165 of open purchase commitments at March31, 2013.

PROPERTY AND EQUIPMENT

Property and equipment are stated at cost. Products on rental contracts are placed in property and equipment and depreciated over their estimated useful life. The Company removes the cost and the related accumulated depreciation from the accounts of assets sold or retired, and the resulting gains or losses are included in the results of operations. Depreciation is computed using the straight-line method over the useful life of the asset. As rental inventory contributes directly to the revenue generating process, the Company classifies the depreciation of rental inventory in cost of revenue.

Repairs and maintenance costs are charged to expense as incurred.

GOODWILL AND INTANGIBLE ASSETS

Goodwill represents the excess of the purchase price over the fair value of the net assets of the business acquired. Authoritative guidance requires that goodwill be tested for impairment at the reporting unit level (operating segment or one level below an operating segment) on an annual basis and between annual tests when circumstances indicate that the recoverability of the carrying amount of goodwill may be in doubt. Application of the goodwill impairment assessment requires judgment in determining the fair value. Significant judgments are required to estimate the fair value including estimating future cash flows, determining appropriate discount rates and other assumptions. The Company initially performs a qualitative evaluation to determine if it is more likely than not that the fair value is less than its carrying amount as a basis for determining whether it is necessary to perform a two-step goodwill impairment test. During the three months ended March 31, 2013, the Company performed the qualitative evaluation and determined that there were no events that indicated that an impairment of goodwill exists as of March 31, 2013.

Intangible assets with estimable lives are amortized in a pattern consistent with the asset’s identifiable cash flows or using a straight-line method over their remaining estimated benefit periods if the pattern of cash flows is not estimable. The Company reviews the carrying value of intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of long-lived assets is measured by comparison of their carrying amounts to the undiscounted cash flows that the asset or asset group is expected to generate. If the carrying amount of the assets exceeds the undiscounted cash flows the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value.

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Stock-Based Compensation Plans (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Summary of stock option activity under the option Plan
Shares under option outstanding beginning balance	1,501,500
Shares under option, granted
Shares under option, exercised
Shares under option, forfeited	(61,000)
Shares under option outstanding ending balance	1,440,500
Shares under option, exercisable ending balance	874,497
Weighted average exercise price outstanding beginning balance	$ 0.95
Weighted average exercise price, granted
Weighted average exercise price, exercised
Weighted average exercise price, forfeited	$ 0.80
Weighted average exercise price outstanding ending balance	$ 0.95
Weighted average exercise price, exercisable ending balance	$ 1.09
Outstanding, weighted average exercise remaining contractual life	6 years 8 months 12 days
Exercisable, weighted average exercise remaining contractual life	5 years 9 months 18 days
Outstanding aggregate intrinsic value	$ 43
Exercisable aggregate intrinsic value	$ 32

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Segment Reporting (Details Textual)	3 Months Ended
	Mar. 31, 2013 Segment
Segment Reporting (Textual) [Abstract]
Number of reporting segments	3

XML

Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Cash	$ 681	$ 823
Accounts receivable, net	11,234	12,224
Inventory	6,324	6,160
Prepaid expenses	256	243
Deferred tax assets	1,855	1,855
Other current assets	228	57
Total current assets	20,578	21,362
Property and equipment, net	3,519	3,851
Deposits	170	171
Deferred financing fees, net	85	98
Intangible assets, net	188	203
Goodwill	251	251
Total assets	24,791	25,936
Current Liabilities:
Line of credit	6,602	5,906
Current portion of notes payable and other obligations	151	144
Accounts payable	1,675	2,057
Income taxes payable	1,003	1,430
Accrued payroll and payroll taxes	934	899
Deferred rent	390	371
Current portion of contingent consideration	21	21
Other accrued liabilities	524	1,265
Total current liabilities	11,300	12,093
Notes payable and other obligations, less current portion	144	114
Deferred rent	673	785
Deferred tax liabilities	786	786
Warranty liability	20	20
Contingent consideration, less current portion	87	83
Total liabilities	13,010	13,881
Stockholders’ Equity:
Preferred stock, $.001 par value, 10,000,000 shares authorized, no shares issued or outstanding
Common stock, $.001 par value, 100,000,000 shares authorized, 31,148,234 shares issued and outstanding at March 31, 2013, and December 31, 2012.	31	31
Paid-in capital	5,489	5,453
Retained earnings	6,262	6,566
Total Zynex, Inc. stockholders’ equity	11,782	12,050
Noncontrolling interest	(1)	5
Total Stockholders’ equity	11,781	12,055
Total liabilities and stockholders’ equity	$ 24,791	$ 25,936

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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net (loss) income	$ (310)	$ 320
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation expense	213	213
Change in the value of contingent consideration	4
Provision for losses on uncollectible accounts receivable	136	63
Amortization of intangible assets	15
Amortization of financing fees	13	12
Provision for obsolete inventory	17
Deferred rent	(93)	(75)
Employee stock-based compensation expense	36	46
Deferred tax expense		19
Changes in operating assets and liabilities, net of business acquisition (in 2012):
Accounts receivable	854	(721)
Inventory	(181)	(995)
Prepaid expenses	(13)	(11)
Deposit and other current assets	(170)	24
Accounts payable	(382)	335
Accrued liabilities	(705)	(47)
Income taxes payable	(427)	47
Net cash used in operating activities	(993)	(770)
Cash flows from investing activities:
Purchases of equipment	(55)	(76)
Change in inventory used for rental	247	(119)
Cash paid for acquisition		(145)
Net cash provided by (used in) investing activities	192	(340)
Cash flows from financing activities:
Net borrowings from line of credit	696	1,096
Deferred financing fees		(2)
Payments on notes payable and capital lease obligations	(37)	(31)
Net cash provided by financing activities	659	1,063
Net decrease in cash	(142)	(47)
Cash at beginning of period	823	789
Cash at end of period	681	742
Supplemental cash flow information:
Interest paid	113	62
Income taxes paid (including interest and penalties)	427	65
Supplemental disclosure of non-cash investing and financing activities:
Common stock issuances for business acquisition		158
Increase in accounts payable for business acquisition		100
Increase in contingent consideration for business acquisition		135
Equipment acquired through capital lease	$ 72

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Fair Value Measurements (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Liabilities:
Contingent consideration	$ 108
Fair Value, Inputs, Level 3
Liabilities:
Contingent consideration	$ 108

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Calculation of Basic and Diluted (Loss) Per Share

The calculation of basic and diluted earnings (loss) per share for the three months ended March31, 2013 and 2012 is as follows:

	Threemonthsended March31,
	2013	2012
Basic:
Net (loss) income applicable to common stockholders	$(304)	$320
Weighted average shares outstanding – basic	31,148.234	30,881,770
Net (loss) income per share – basic	$(0.01)	$0.01
Diluted:
Net (loss) income applicable to common stockholders	$(304)	$320
Weighted average shares outstanding – basic	31,148,234	30,881,770
Dilutive securities	-	155,647
Weighted average shares outstanding – diluted	31,148,234	31,037,417
Net (loss) income per share – diluted	$(0.01)	$0.01

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Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Fair Value Measurements (Textual) [Abstract]
Changes in fair value obligation and accretion expenses	$ 4
Contingent payments	$ 0

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value of Assets and Liabilities on a Recurring Basis

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of March31, 2013, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value:

	March31,2013	Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	$108	$108

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Unaudited Condensed Consolidated Financial Statements

3 Months Ended

Mar. 31, 2013

Unaudited Condensed Consolidated Financial Statements and Managements' Plans

(1)UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTSAND MANAGEMENTS’ PLANS

Zynex, Inc. (a Nevada corporation) and its subsidiaries, Zynex Medical, Inc. (ZMI) (a Colorado corporation, wholly-owned), ZynexNeuroDiagnostics, Inc. (ZND) (a Colorado corporation, wholly-owned), Zynex Monitoring Solutions Inc. (ZMS) (a Colorado corporation, wholly-owned), Zynex Billing and Consulting, LLC (ZBC) (a Colorado limited liability company, 80% majority-owned) and Zynex Europe, ApS (ZEU) (a Denmark corporation, wholly-owned), are collectively referred to as the “Company”.

The unaudited condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and accounting principles generally accepted in the United States of America (“U.S. GAAP”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures included herein are adequate to make the information presented not misleading. A description of the Company’s accounting policies and other financial information is included in the audited consolidated financial statements as filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December31, 2012. Amounts as of December31, 2012 are derived from those audited consolidated financial statements. These interim condensed consolidated financial statements should be read in conjunction with the annual audited financial statements, accounting policies and notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December31, 2012, which has previously been filed with the SEC.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary to present fairly the financial position of the Company as of March31, 2013 and the results of operations and cash flows for the periods presented.All such adjustments are of a normal recurring nature.The results of operations for the three months ended March31, 2013 are not necessarily indicative of the results that may be achieved for a full fiscal year and cannot be used to indicate financial performance for the entire year.

For the three months ended March 31, 2013 and 2012, the Company reported negative cash flows from operations of $993 and $770, respectively. In addition, the Company’s line of credit increased from $5,906 at December 31,2012 to $6,602 at March 31, 2013, primarily driven by working capital requirements related to an increase in sales orders during the year. Maximum borrowings under the line of credit are $7,000. Management developed the Company’s operating plans for 2013 to emphasize cash flow, under which the Company is making operational billing changes to increase cash collections as well as implementing various cost modifications to reduce expenses.Management believes that the Company’s cash flows from operating activities and borrowing available under the line of credit will be sufficient to fund cash requirements through March 31, 2014.

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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Statement - Condensed Consolidated Balance Sheets (Parenthetical) [Line Items]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	31,148,234	31,148,234
Common stock, shares outstanding	31,148,234	31,148,234

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Litigation

3 Months Ended

Mar. 31, 2013

Litigation

(11)LITIGATION

From time to time, the Company may become party to litigation and other claims in the ordinary course of business. To the extent that such claims and litigation arise, management would provide for them if losses are determined to be both probable and estimable.

The Company is currently not a party to any material pending legal proceedings.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2013	May 13, 2013
Document - Document and Entity Information [Line Items]
Entity Registrant Name	ZYNEX INC
Entity Central Index Key	0000846475
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		31,148,234

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Segment Reporting

3 Months Ended

Mar. 31, 2013

Segment Reporting

(12)SEGMENT REPORTING

At March31, 2013, the Company has determined that it has three reporting segments comprised of the following subsidiaries, ZMI and ZBC, ZND and ZEU, and ZMS. This determination was made based on the nature of the products and services offered to customers or the nature of the function in the organization. The accounting policies for each of these segments are the same as those described in Note 2, and inter-segment transactions are eliminated.

Net revenue was primarily generated from sales in the United States.

	ZMI& ZBC	ZND& ZEU	ZMS	TOTAL
THREE MONTHS ENDED MARCH 31, 2013
Sales	$7,606	$62	$-	$7,668
Gross profit	5,430	47	-	5,477
Total assets	24,142	625	24	24,791
THREE MONTHS ENDED MARCH 31, 2012
Sales	$8,869	75	$-	$8,944
Gross profit	7,081	50	-	7,131
Total assets	23,098	781	9	23,888

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Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net revenue:
Rental	$ 1,679	$ 2,062
Sales	5,989	6,882
Total net revenue	7,668	8,944
Cost of revenue:
Rental	301	258
Sales	1,890	1,555
Total cost of revenue	2,191	1,813
Gross profit	5,477	7,131
Selling, general and administrative expense	5,833	6,645
(Loss) income from operations	(356)	486
Other expense:
Interest expense	(130)	(93)
Other expense	(6)
Total other income (expense)	(136)	(93)
(Loss) income before income tax	(492)	393
Income tax benefit (expense)	182	(73)
Net (loss) income	(310)	320
Plus: Net loss – noncontrolling interest	6
Net (loss) income – attributable to Zynex, Inc.:	$ (304)	$ 320
Net (loss) income per share:
Basic	$ (0.01)	$ 0.01
Diluted	$ (0.01)	$ 0.01
Weighted average number of common shares outstanding:
Basic	31,148,234	30,881,770
Diluted	31,148,234	31,037,417

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Stock-Based Compensation Plans

3 Months Ended

Mar. 31, 2013

Stock-Based Compensation Plans

(6)STOCK-BASED COMPENSATION PLANS

The Company has reserved 3,000,000 shares of common stock for issuance under its 2005 Stock Option Plan (the “Option Plan”). Vesting provisions are determined by the Board of Directors. All stock options under the Option Plan expire no later than ten years from the date of grant.

In the three months ended March31, 2013 and 2012, the Company recorded compensation expense related to stock options of $36 and $46, respectively. Stock-based compensation recorded in the accompanying condensed consolidated statement of operations for the three months ended March31, 2013 and 2012 included $4 and $7, respectively, in cost of goods sold and $32 and $39, respectively, in selling, general and administrative expenses.

In the three months ended March31, 2013 and 2012, the Company didnot grant options to employees or any other person for the purchase of shares of common stock.

A summary of stock option activity under the Option Plan for the three months ended March31, 2013is presented below:

	Shares Under Option	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at January1, 2013	1,501,500	$0.95
Granted	-	$-
Exercised	-	$-
Forfeited	(61,000)	$0.80
Outstanding at March 31, 2013	1,440,500	$0.95	6.7 years	$43
Exercisable at March 31, 2013	874,497	$1.09	5.8 years	$32

A summary of status of the Company’s non-vested share awards as of and for the three months ended March31, 2013 is presented below:

	NonvestedShares UnderOption	WeightedAverage GrantDateFairValue
Non-vested at January 1, 2013	690,877	$0.69
Granted	-	$-
Vested	(87,374)	$0.69
Forfeited	(37,500)	$0.67
Non-vested at March 31, 2013	566,003	$0.69

As of March31, 2013, the Company had approximately $188 of unrecognized compensation expense related to stock options that will be recognized over a weighted-average period of approximately 2.3 years.

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Earnings Per Share

3 Months Ended

Mar. 31, 2013

Earnings (Loss) Per Share

(5) EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding and the number of dilutive potential common share equivalents during the period, calculated using the treasury-stock method.

The calculation of basic and diluted earnings (loss) per share for the three months ended March31, 2013 and 2012 is as follows:

	Threemonthsended March31,
	2013	2012
Basic:
Net (loss) income applicable to common stockholders	$(304)	$320
Weighted average shares outstanding – basic	31,148.234	30,881,770
Net (loss) income per share – basic	$(0.01)	$0.01
Diluted:
Net (loss) income applicable to common stockholders	$(304)	$320
Weighted average shares outstanding – basic	31,148,234	30,881,770
Dilutive securities	-	155,647
Weighted average shares outstanding – diluted	31,148,234	31,037,417
Net (loss) income per share – diluted	$(0.01)	$0.01

Potential common share equivalents as of March31, 2012 of 1,187,500 related to certain outstanding stock options, were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive, as the option exercise prices exceeded the average market price of the Company’s common stock. The effect of these shares, if any, on the diluted earnings per share calculation may vary significantly depending on fluctuations in the stock price.

The effects of potential common stock equivalents, related to certain outstanding options for the three months ended March 31, 2013 of 1,237,000 shares have not been included in the computation of diluted net loss per share becausethe impact of the potential shares would decrease the loss per share.

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Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2013

Summary of Stock Option Activity Under the Option Plan

A summary of stock option activity under the Option Plan for the three months ended March31, 2013is presented below:

	Shares Under Option	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at January1, 2013	1,501,500	$0.95
Granted	-	$-
Exercised	-	$-
Forfeited	(61,000)	$0.80
Outstanding at March 31, 2013	1,440,500	$0.95	6.7 years	$43
Exercisable at March 31, 2013	874,497	$1.09	5.8 years	$32

Summary of Status of the Company's Non-Vested Share Awards

A summary of status of the Company’s non-vested share awards as of and for the three months ended March31, 2013 is presented below:

	NonvestedShares UnderOption	WeightedAverage GrantDateFairValue
Non-vested at January 1, 2013	690,877	$0.69
Granted	-	$-
Vested	(87,374)	$0.69
Forfeited	(37,500)	$0.67
Non-vested at March 31, 2013	566,003	$0.69

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Principles of Consolidation

PRINCIPLES OF CONSOLIDATION

The accompanying unaudited condensed consolidated financial statements include the accounts of Zynex, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Noncontrolling Interest

NONCONTROLLING INTEREST

Noncontrolling interest in the equity of a subsidiary is accounted for and reported as shareholders equity. Noncontrolling interest represents the 20% ownership in the Company’s majority-owned subsidiary, ZBC. In 2012, the noncontrolling interest member contributed $10 of property and equipment to ZBC.

Use of Estimates

USE OF ESTIMATES

Preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The most significant management estimates used in the preparation of the accompanying consolidated financial statements are associated with the allowance for contractual adjustments and uncollectible accounts receivable, the reserve for obsolete and damaged inventory, stock-based compensation, valuation of goodwill and other long-lived assets, and income taxes.

Revenue Recognition, Allowance for Contractual Adjustments and Collectibility

REVENUE RECOGNITION, ALLOWANCE FOR CONTRACTUAL ADJUSTMENTS AND COLLECTIBILITY

The Company recognizes revenue when each of the following four conditions are met 1) a contract or sales arrangement exists 2) products have been shipped and title has transferred, or rental services have been rendered 3) the price of the products or services is fixed or determinable and 4) collectability is reasonably assured. Accordingly, the Company recognizes revenue, both rental and sales, when products have been delivered to the patient and the patient’s insurance (if the patient has insurance) has been verified. For medical products that are sold from inventories consigned at clinic locations, the Company recognizes revenue when it receives notice that the product has been prescribed and delivered to the patient and the patient’s insurance coverage has been verified or preauthorization has been obtained from the insurance company, when required. Revenue from the rental of products is normally on a month-to-month basis and is recognized ratably over the products’ rental period. Revenue from sales to distributors is recognized when the Company ships its products, which fulfills its order and transfers title. Revenue is reported net, after adjustments for estimated insurance company or governmental agency (collectively “Third-party Payors”) reimbursement deductions. The deductions are known throughout the health care industry as “contractual adjustments” whereby the Third-party Payors unilaterally reduce the amount they reimburse for the Company’s products.

A significant portion of the Company’s revenues are derived, and the related receivables are due, from Third-party Payors. The nature of these receivables within this industry has typically resulted in long collection cycles. The process of determining what products will be reimbursed by Third-party Payors and the amounts that they will reimburse is complex and depends on conditions and procedures that vary among providers and may change from time to time. The Company maintains an allowance for contractual adjustments and records additions to the allowance to account for the risk of nonpayment. Contractual adjustments result from reimbursements from Third-party Payors that are less than amounts claimed or where the amount claimed by the Company exceeds the Third-party Payors’ usual, customary and reasonable reimbursement rate. The Company determines the amount of the allowance, and adjusts it at the end of each reporting period, based on a number of factors, including historical rates of collection, the aging of the receivables, trends in the historical rates of collection and current relationships and experience with the Third-party Payors. If the rates of collection of past-due receivables recorded for previous fiscal periods changes, or if there is a trend in the rates of collection on those receivables, the Company may be required to change the rate at which it provides for additions to the allowance. A change in the rates of the Company’s collections can result from a number of factors, including experience and training of billing personnel, changes in the reimbursement policies or practices of Third-party Payors, or changes in industry rates of reimbursement. Accordingly, changes to the allowance for contractual adjustments, which are recorded in the income statement as a reduction of revenue, have historically fluctuated and may continue to fluctuate significantly from quarter to quarter.

Due to the nature of the industry and the reimbursement environment in which we operate, estimates are required to record net revenues and accounts receivable at their net realizable values. Inherent in these estimates is the risk that they will have to be revised or updated as additional information becomes available. Specifically, the complexity of third-party billing arrangements and the uncertainty of reimbursement amounts for certain products or services from payors or an unanticipated requirement to refund payments previously received may result in adjustments to amounts originally recorded. Due to continuing changes in the health care industry and third-party reimbursement, as well as changes in our billing practices to increase cash collections, it is possible that management’s estimates could change in the near term, which could have an impact on our results of operations and cash flows. Any differences between estimated settlements and final determinations are reflected as an increase or a reduction to revenue in the period when such final determinations are known.

The Company frequently receives refund requests from insurance providers relating to specific patients and dates of service. Billing and reimbursement disputes are very common in the Company’s industry. These requests are sometimes related to a limited number of patients or products; at other times, they include a significant number of refund claims in a single request. The Company reviews and evaluates these requests and determines if any refund request is appropriate. The Company also reviews these refund claims when it is rebilling or pursuing reimbursement from that insurance provider. The Company frequently has significant offsets against such refund requests, and sometimes amounts are due to the Company in excess of the amounts of refunds requested by the insurance providers. Therefore, at the time of receipt of such refund requests, the Company is generally unable to determine if a refund request is valid and should be accrued.

As of March31, 2013, the Company believes it has an adequate allowance for contractual adjustments relating to all known insurance disputes and refund requests. However, no assurances can be given with respect to such estimates of reimbursements and offsets or the ultimate outcome of any refund requests.

In addition to the allowance for contractual adjustments, the Company records an allowance for uncollectible accounts receivable. Uncollectible accounts receivable are primarily a result of the following: non-payment from patients who have been direct billed for co-payments or deductibles, lack of appropriate insurance coverage and disallowances of charges by Third-party Payors. If there is a change to a material insurance provider contract or policy, application by a provider, a decline in the economic condition of providers or a significant turnover of Company billing personnel resulting in diminished collection effectiveness, the estimate of the allowance for uncollectible accounts receivable may not be adequate and may result in an increase in the future.

At March31, 2013 and December31, 2012, the allowance for uncollectible accounts receivable is $1,837.

Fair Value of Financial Instruments

FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company’s financial instruments at March31, 2013 include cash, accounts receivable and accounts payable, for which current carrying amounts approximate fair value due to their short-term nature. Financial instruments at March31, 2013 also include the line of credit and notes payable, the carrying value of which approximates fair value because the interest rates on the outstanding borrowings are at rates that approximate market rates for borrowings with similar terms and average maturities.

Inventory

INVENTORY

Inventories, which primarily represent finished goods, are valued at the lower of cost (average) or market. Finished goods include products held at the Company’s headquarters and at different locations by health care providers or other parties for rental or sale to patients. Total (gross) inventories at March31, 2013 included $6,265 of finished goods, $526 of parts, and $513 of supplies.

The Company monitors inventory for turnover and obsolescence, and records losses for excess and obsolete inventory as appropriate. At March31, 2013, the Company had an allowance for obsolete and damaged inventory of approximately $980. The allowance for obsolete and damaged inventory was approximately $1,181 at December31, 2012. The Company had $2,165 of open purchase commitments at March31, 2013.

Property and Equipment

PROPERTY AND EQUIPMENT

Property and equipment are stated at cost. Products on rental contracts are placed in property and equipment and depreciated over their estimated useful life. The Company removes the cost and the related accumulated depreciation from the accounts of assets sold or retired, and the resulting gains or losses are included in the results of operations. Depreciation is computed using the straight-line method over the useful life of the asset. As rental inventory contributes directly to the revenue generating process, the Company classifies the depreciation of rental inventory in cost of revenue.

Repairs and maintenance costs are charged to expense as incurred.

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

Goodwill represents the excess of the purchase price over the fair value of the net assets of the business acquired. Authoritative guidance requires that goodwill be tested for impairment at the reporting unit level (operating segment or one level below an operating segment) on an annual basis and between annual tests when circumstances indicate that the recoverability of the carrying amount of goodwill may be in doubt. Application of the goodwill impairment assessment requires judgment in determining the fair value. Significant judgments are required to estimate the fair value including estimating future cash flows, determining appropriate discount rates and other assumptions. The Company initially performs a qualitative evaluation to determine if it is more likely than not that the fair value is less than its carrying amount as a basis for determining whether it is necessary to perform a two-step goodwill impairment test. During the three months ended March 31, 2013, the Company performed the qualitative evaluation and determined that there were no events that indicated that an impairment of goodwill exists as of March 31, 2013.

Intangible assets with estimable lives are amortized in a pattern consistent with the asset’s identifiable cash flows or using a straight-line method over their remaining estimated benefit periods if the pattern of cash flows is not estimable. The Company reviews the carrying value of intangible and other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of long-lived assets is measured by comparison of their carrying amounts to the undiscounted cash flows that the asset or asset group is expected to generate. If the carrying amount of the assets exceeds the undiscounted cash flows the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value.

Share-based Compensation

STOCK-BASED COMPENSATION

The Company accounts for stock-based compensation through recognition of the cost of employee services received in exchange for an award of equity instruments, which is measured based on the grant date fair value of the award that is ultimately expected to vest during the period. The stock-based compensation expenses is recognized over the period during which an employee is required to provide service in exchange for the award (the requisite service period, which in the Company’s case is the same as the vesting period).

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Line of Credit

3 Months Ended

Mar. 31, 2013

Line of Credit

(9)LINE OF CREDIT

The Company has an asset-backed revolving credit facility of up to $7,000, subject to reserves and reductions to the extent of changes in the Company’s asset borrowing base, under a Loan and Security Agreement (the “Doral Agreement”) with Doral Healthcare Finance, a division of Doral Money, Inc. Borrowings under the Doral Agreement bear interest at a variable rate equal to the greater of (i)the British Bankers’ Association LIBOR rate as published in The Wall Street Journal for dollar deposits in the amount of $1,000 with a maturity of one month or (ii)3%per annum, plus, in each case, a margin of 3.75%. The Doral agreement requires monthly interest payments in arrears on the first date of each month. The Doral Agreement will mature on December19, 2014. The Company may terminate the Doral Agreement at any time prior to the maturity date upon thirty days’ prior written notice and upon payment in full of all outstanding obligations under the Doral Agreement. If the Company terminates the Doral Agreement, the Company must pay a specified early termination fee. As of March31, 2013, $6,602 was outstanding under the Doral Agreement and $398 was available for borrowing based on the Company’s current borrowing base.

The Doral Agreement requires a lockbox arrangement whereby all receipts are swept daily to reduce borrowings outstanding. This arrangement causes the Doral Agreement to be classified as a current liability.

As of March31, 2013, the effective interest rate under the Doral Agreement was 8% (7% interest rate and 1% fees).

The Doral Agreement contains certain customary restrictive and financial covenants for asset-backed credit facilities. As of March31, 2013, the Company was in compliance with the financial covenants under the Doral Agreement.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Measurements

(7)FAIR VALUE MEASUREMENTS

The Company measures certain assets and liabilities pursuant to accounting guidance which establishes a three-tier fair value hierarchy and prioritizes the inputs used in measuring fair value. Theses tiers include:

•Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities.

•Level 2: Observable prices that are based on inputs not quoted on active markets, but corroborated by market data.

•Level 3: Unobservable inputs are used when little or no market data is available.

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of March31, 2013, and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value:

	March31,2013	Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	$108	$108

The fair value of the contingent consideration was determined using a discounted cash flow model at the acquisition date and is revalued at each reporting date or more frequently if circumstances dictate based on changes in the discount periods and rates, changes in the timing and amount of the revenue estimates and changes in probability assumptions with respect to the likelihood of achieving the obligations. The changes in the fair value of this obligation and the accretion expense related to the increase in the net present value of the contingent liabilities was $4 for the three months ended March31, 2013. No contingent payments were made during the period.

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Income Taxes

3 Months Ended

Mar. 31, 2013

Income Taxes

(8)INCOME TAXES

The provision for income taxes is recorded at the end of each interim period based on the Company’s best estimate of its effective income tax rate expected to be applicable for the full fiscal year.The Company’s effective income tax rate for the three months ended March31, 2013 was 37%. The Company’s income tax expense for the three months ended March 31, 2012 was partially offset by a state income tax refund, which resulted in a lower effective tax rate for the period. The Company paid income taxes of $427 during the first three months of 2013, which was included in income taxes payable at December31, 2012.

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Concentrations

3 Months Ended

Mar. 31, 2013

Concentrations

(10)CONCENTRATIONS

The Company sourced approximately 24% of its electrotherapy products from one contract manufacturer during the three months ended March31, 2013. Management believes that its relationships with suppliers are strong; however, if necessary these relationships can be replaced. If the relationships were to be replaced, there may be a short-term disruption to operations, a period of time in which products may not be available and additional expenses may be incurred.

The Company had receivables from a private health insurance carrier at March31, 2013 that made up approximately 16% of the net accounts receivable balance. The same private health insurance carrier made up approximately 22% of net accounts receivable at December31, 2012.

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Stock-Based Compensation Plans (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Stock Based Compensation Plans (Additional Textual) [Abstract]
Compensation expenses related to stock options	$ 36	$ 46
Unrecognized compensation expense related to stock options	188
Weighted-average period of unrecognized compensation expense related to stock option	2 years 3 months 18 days
Stock-based compensation plans (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,000,000
Stock Options Under Option Plan Maximum Expiry Period	10 years
Cost of Sales
Stock-based compensation plans (Textual) [Abstract]
Stock based compensation including cost of good sold	4	7
Selling, General and Administrative Expenses
Stock-based compensation plans (Textual) [Abstract]
Stock based compensation including cost of good sold	$ 32	$ 39

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Acquisition of Intangible Assets

Intangible assets as of March31, 2013 and December 31, 2012, consist of the following:

	March 31, 2013	December 31, 2012	Amortization Life Years
Trade names	$72	$72	5
Non-compete agreement	26	26	5
Technology	135	135	5
Domain Name	18	18	1
Total intangible assets, gross	251	251
Less: accumulated amortization	(63)	(48)
Total intangible assets, net	$188	$203

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Unaudited Condensed Consolidated Financial Statements (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Unaudited Condensed Consolidated Financial Statements (Textual) [Abstract]
Percentage of limited liability	80.00%
Negative cash flows from operations	$ 993	$ 770
Maximum borrowings under line of credit	7,000
Line of credit	$ 6,602		$ 5,906

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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Sales	$ 7,668	$ 8,944
Gross profit	5,477	7,131
Total assets	24,791	23,888	25,936
Zynex Medical
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Sales	7,606	8,869
Gross profit	5,430	7,081
Total assets	24,142	23,098
Zynex NeuroDiagnostics
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Sales	62	75
Gross profit	47	50
Total assets	625	781
Zynex Monitoring Solutions
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Total assets	$ 24	$ 9

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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock	Paid-in Capital	Retained Earnings	Noncontrolling Interest
Balance at Dec. 31, 2012	$ 12,055	$ 31	$ 5,453	$ 6,566	$ 5
Balance, shares at Dec. 31, 2012	31,148,234	31,148,234
Employee stock-based compensation	36		36
Net loss	(310)			(304)	(6)
Balance at Mar. 31, 2013	$ 11,781	$ 31	$ 5,489	$ 6,262	$ (1)
Balance, shares at Mar. 31, 2013	31,148,234	31,148,234

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Intangible Assets

3 Months Ended

Mar. 31, 2013

Intangible Assets

(4)INTANGIBLE ASSETS

Intangible assets as of March31, 2013 and December 31, 2012, consist of the following:

	March 31, 2013	December 31, 2012	Amortization Life Years
Trade names	$72	$72	5
Non-compete agreement	26	26	5
Technology	135	135	5
Domain Name	18	18	1
Total intangible assets, gross	251	251
Less: accumulated amortization	(63)	(48)
Total intangible assets, net	$188	$203

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Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2013
Significant Accounting Policies (Textual) [Abstract]
Equity and Noncontrolling interest		20.00%
Noncontrolling interest member contributed	$ 10
Allowance for uncollectible accounts receivable	1,837	1,837
Inventory finished goods		6,265
Inventory parts		526
Inventory supplies		513
Reserve for obsolete and damaged inventory	1,181	980
Open purchase commitments		$ 2,165

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Line of Credit (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	Dec. 19, 2011	Mar. 31, 2013
Line of Credit (Textual) [Abstract]
Maximum borrowings under line of credit		$ 7,000
Line of Credit (Additional Textual) [Abstract]
Dollar deposits in amount	1,000
Base rate for variable interest rate for borrowings	3.00%
Basis spread on variable interest rate	3.75%
Line of credit agreement maturity notice period	30 days
Date of Maturity	Dec. 19, 2014
Dollar deposit maturity period	1 month
RLOC
Line of Credit (Textual) [Abstract]
Maximum borrowings under line of credit	7,000
Interest rate description	LIBOR rate as published in The Wall Street Journal for dollar deposits in the amount of $1,000 with a maturity of one month or (ii) 3% per annum, plus, in each case, a margin of 3.75%.
Outstanding amount on the Credit Agreement		6,602
Remaining amount available for borrowing		$ 398
Effective interest rate under the Credit Agreement		8.00%
Interest rate		7.00%
Fees include in effective interest rate under the credit agreement		1.00%

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Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2013

Property and Equipment

Property and equipment as of March31, 2013 and December31, 2012 consist of the following:

	March31, 2013	December31, 2012	Useful lives
Office furniture and equipment	$1,960	$1,836	3-7years
Rental inventory	2,772	3,147	5 years
Vehicles	76	76	5 years
Leasehold improvements	375	375	2-6 years
Assembly equipment	171	168	7 years
	5,354	5,602
Less accumulated depreciation	(1,835)	(1,751)
	$3,519	$3,851