We earn net service revenue through our home health, hospice and personal-care care centers by providing a variety of services almost exclusively in the homes of our patients. This net service revenue is earned and billed either on an episode of care basis, on a per visit basis or on a daily basis depending upon the payment terms and conditions established with each payor for services provided. We refer to home health revenue earned and billed on a 60-day episode of care as episodic-based revenue.

When we record our service revenue, we record it net of estimated revenue adjustments and contractual adjustments to reflect amounts we estimate to be realizable for services provided, as discussed below. We believe, based on information currently available to us and based on our judgment, that changes to one or more factors that impact the accounting estimates (such as our estimates related to revenue adjustments, contractual adjustments and episodes in progress) we make in determining net service revenue, which changes are likely to occur from period to period, will not materially impact our reported consolidated financial condition, results of operations, cash flows or our future financial results.

Net service revenue is recorded under the Medicare prospective payment system (“PPS”) based on a 60-day episode payment rate that is subject to adjustment based on certain variables including, but not limited to: (a) an outlier payment if our patient's care was unusually costly (capped at 10% of total reimbursement per provider number); (b) a low utilization payment adjustment (“LUPA”) if the number of visits was fewer than five; (c) a partial payment if our patient transferred to another provider or we received a patient from another provider before completing the episode; (d) a payment adjustment based upon the level of therapy services required (with various incremental adjustments made for additional visits, with larger payment increases associated with the sixth, fourteenth and twentieth visit thresholds); (e) adjustments to payments if we are unable to perform periodic therapy assessments; (f) the number of episodes of care provided to a patient, regardless of whether the same home health provider provided care for the entire series of episodes; (g) changes in the base episode payments established by the Medicare Program; (h) adjustments to the base episode payments for case mix and geographic wages; and (i) recoveries of overpayments. In addition, we make adjustments to Medicare revenue if we find that we are unable to produce appropriate documentation of a face to face encounter between the patient and physician.

We make adjustments to Medicare revenue to reflect differences between estimated and actual payment amounts, our discovered inability to obtain appropriate billing documentation or authorizations and other reasons unrelated to credit risk. We estimate the impact of such adjustments based on our historical experience, which primarily includes a historical collection rate of over 99% on Medicare claims, and record this estimate during the period in which services are rendered as an estimated revenue adjustment and a corresponding reduction to patient accounts receivable. Therefore, we believe that our reported net service revenue and patient accounts receivable will be the net amounts to be realized from Medicare for services rendered.

In addition to revenue recognized on completed episodes, we also recognize a portion of revenue associated with episodes in progress. Episodes in progress are 60-day episodes of care that begin during the reporting period, but were not completed as of the end of the period. We estimate this revenue on a monthly basis based upon historical trends. The primary factors underlying this estimate are the number of episodes in progress at the end of the reporting period, expected Medicare revenue per episode and our estimate of the average percentage complete based on the number of days elapsed during an episode of care. As of September 30, 2017 and 2016, the difference between the cash received from Medicare for a request for anticipated payment (“RAP”) on episodes in progress and the associated estimated revenue was immaterial and, therefore, the resulting credits were recorded as a reduction to our outstanding patient accounts receivable in our condensed consolidated balance sheets for such periods.

Episodic-based Revenue. We recognize revenue in a similar manner as we recognize Medicare revenue for episodic-based rates that are paid by other insurance carriers, including Medicare Advantage programs; however, these rates can vary based upon the negotiated terms.

Non-episodic based Revenue. Gross revenue is recorded on an accrual basis based upon the date of service at amounts equal to our established or estimated per-visit rates, as applicable. Contractual adjustments are recorded for the difference between our standard rates and the contracted rates to be realized from patients, third parties and others for services provided and are deducted from gross revenue to determine net service revenue and are also recorded as a reduction to our outstanding patient accounts receivable. In addition, we receive a minimal amount of our net service revenue from patients who are either self-insured or are obligated for an insurance co-payment.

Gross revenue is recorded on an accrual basis based upon the date of service at amounts equal to the estimated payment rates. The estimated payment rates are daily or hourly rates for each of the four levels of care we deliver. The four levels of care are routine care, general inpatient care, continuous home care and respite care. Routine care accounts for 98% of our total net Medicare hospice service revenue for each of the three and nine-month periods ended September 30, 2017, and 99% of our total net Medicare hospice service revenue for each of the three and nine-month periods ended September 30, 2016. Beginning January 1, 2016, the Centers for Medicare and Medicaid Services (“CMS”) has provided for two separate payment rates for routine care: payments for the first 60 days of care and care beyond 60 days. In addition to the two routine rates, beginning January 1, 2016, Medicare is also reimbursing for a service intensity add-on (“SIA”). The SIA is based on visits made in the last seven days of life by a registered nurse (“RN”) or medical social worker (“MSW”) for patients in a routine level of care.

We make adjustments to Medicare revenue for an inability to obtain appropriate billing documentation or acceptable authorizations and other reasons unrelated to credit risk. We estimate the impact of these adjustments based on our historical experience, which primarily includes our historical collection rate of over 99% on Medicare claims, and record it during the period services are rendered as an estimated revenue adjustment and as a reduction to our outstanding patient accounts receivable.

Additionally, as Medicare hospice revenue is subject to an inpatient cap limit and an overall payment cap for each provider number, we monitor these caps and estimate amounts due back to Medicare if we estimate a cap has been exceeded. We record these adjustments as a reduction to revenue and an increase in other accrued liabilities. Beginning for the cap year ending October 31, 2014, providers are required to self-report and pay their estimated cap liability by March 31st of the following year. As of September 30, 2017, we have settled our Medicare hospice reimbursements for all fiscal years through October 31, 2012. As of September 30, 2017 we have recorded $1.0 million for estimated amounts due back to Medicare in other accrued liabilities for the Federal cap years ended October 31, 2013 through October 31, 2017. As of December 31, 2016, we had recorded $0.8 million for estimated amounts due back to Medicare in other accrued liabilities for the Federal cap years ended October 31, 2013 through October 31, 2016.

We record gross revenue on an accrual basis based upon the date of service at amounts equal to our established rates or estimated per day rates, as applicable. Contractual adjustments are recorded for the difference between our established rates and the amounts estimated to be realizable from patients, third parties and others for services provided and are deducted from gross revenue to determine our net service revenue and patient accounts receivable.

We generate net service revenues by providing our services directly to patients primarily on a per hour, visit or unit basis. We receive payment for providing such services from our customers, including state and local governmental agencies, managed care organizations, commercial insurers and private consumers. Net service revenues are principally provided based on authorized hours, visits or units determined by the relevant agency, at a rate that is either contractual or fixed by legislation, which are recognized as net service revenue at the time services are rendered.

Our patient accounts receivable are uncollateralized and consist of amounts due from Medicare, Medicaid, other third-party payors and patients. As of September 30, 2017 there is no single payor, other than Medicare, that accounts for more than 10% of our total outstanding patient receivables. Thus, we believe there are no other significant concentrations of receivables that would subject us to any significant credit risk in the collection of our patient accounts receivable. We fully reserve for accounts which are aged at 365 days or greater. We write off accounts on a monthly basis once we have exhausted our collection efforts and deem an account to be uncollectible.

We believe the credit risk associated with our Medicare accounts, which represent 60% and 61% of our net patient accounts receivable at September 30, 2017 and December 31, 2016, respectively, is limited due to our historical collection rate of over 99% from Medicare and the fact that Medicare is a U.S. government payor. Accordingly, we do not record an allowance for doubtful accounts for our Medicare patient accounts receivable, which are recorded at their net realizable value after recording estimated revenue adjustments as discussed above. During the three and nine-month periods ended September 30, 2017, we recorded $3.5 million and $11.9 million, respectively, in estimated revenue adjustments to Medicare revenue as compared to $1.6 million and $5.9 million during the three and nine-month periods ended September 30, 2016, respectively.

We believe there is a certain level of credit risk associated with non-Medicare payors. To provide for our non-Medicare patient accounts receivable that could become uncollectible in the future, we establish an allowance for doubtful accounts to reduce the carrying amount to its estimated net realizable value.

For our home health patients, our pre-billing process includes verifying that we are eligible for payment from Medicare for the services that we provide to our patients. Our Medicare billing begins with a process to ensure that our billings are accurate through the utilization of an electronic Medicare claim review. We submit a RAP for 60% of our estimated payment for the initial episode at the start of care or 50% of the estimated payment for any subsequent episodes of care contiguous with the first episode for a particular patient. The full amount of the episode is billed after the episode has been completed (“final billed”). The RAP received for that particular episode is then deducted from our final payment. If a final bill is not submitted within the greater of 120 days from the start of the episode, or 60 days from the date the RAP was paid, any RAPs received for that episode will be recouped by Medicare from any other claims in process for that particular provider number. The RAP and final claim must then be re-submitted.

For our hospice patients, our pre-billing process includes verifying that we are eligible for payment from Medicare for the services that we provide to our patients. Our Medicare billing begins with a process to ensure that our billings are accurate through the utilization of an electronic Medicare claim review. We bill Medicare on a monthly basis for the services provided to the patient.

For our non-Medicare patients, our pre-billing process primarily begins with verifying a patient's eligibility for services with the applicable payor. Once the patient has been confirmed for eligibility, we will provide services to the patient and bill the applicable payor. Our review and evaluation of non-Medicare accounts receivable includes a detailed review of outstanding balances and special consideration to concentrations of receivables from particular payors or groups of payors with similar characteristics that would subject us to any significant credit risk. We estimate an allowance for doubtful accounts based upon our assessment of historical and expected net collections, business and economic conditions, trends in payment and an evaluation of collectability based upon the date that the service was provided. Based upon our best judgment, we believe the allowance for doubtful accounts adequately provides for accounts that will not be collected due to credit risk.


Fair Value of Financial Instruments

The following details our financial instruments where the carrying value and the fair value differ (amounts in millions):

	Fair Value at Reporting Date Using
Financial Instrument	Carrying Value as of September 30, 2017		Quoted Prices in Active Markets for Identical Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Long-term obligations	$	92.0	$	0	$	92.8	$	0

The fair value hierarchy is based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value. The three levels of inputs are as follows:

Our deferred compensation plan assets are recorded at fair value and are considered a level 2 measurement. For our other financial instruments, including our cash and cash equivalents, patient accounts receivable, accounts payable, payroll and employee benefits and accrued expenses, we estimate the carrying amounts' approximate fair value.

Net income per share attributable to Amedisys, Inc. common stockholders, calculated on the treasury stock method, is based on the weighted average number of shares outstanding during the period. The following table sets forth, for the periods indicated, shares used in our computation of the weighted-average shares outstanding, which are used to calculate our basic and diluted net income attributable to Amedisys, Inc. common stockholders (amounts in thousands):

		For the Three-Month Periods Ended September 30,		For the Nine-Month Periods Ended September 30,
		2017	2016	2017	2016
Weighted average number of shares outstanding - basic		33,838	33,309	33,640	33,142
Effect of dilutive securities:
	Stock options	271	207	279	156
	Non-vested stock and stock units	254	307	336	401
Weighted average number of shares outstanding - diluted		34,363	33,823	34,255	33,699
Anti-dilutive securities		337	204	279	254

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue for which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, to defer the effective date of the standard from January 1, 2017 to January 1, 2018, with an option that permits companies to adopt the standard as early as the original effective date. The new ASU reflects the decisions reached by the FASB at its meeting in July 2015. Early application prior to the original effective date is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company has substantially completed its evaluation of the standard and does not expect a material impact on its consolidated financial statements upon implementation of ASU 2014-09 and ASU 2015-14 on January 1, 2018.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which will require lessees to recognize a lease liability and right-of-use asset for all leases (with the exception of short-term leases) at the commencement date. The ASU is effective for annual and interim periods beginning on or after December 15, 2018. Early adoption is permitted. The standard requires a modified retrospective transition method which requires application of the new guidance for all periods presented. While the Company expects adoption of this standard to lead to a material increase in the assets and liabilities recorded on our balance sheet, we are still evaluating the overall impact on our consolidated financial statements and related disclosures and the effect of the standard on our ongoing financial reporting.

In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which will simplify the accounting for share-based payment award transactions, including income tax consequences, classification of awards as either equity or liability and classification on the statement of cash flows. The ASU is effective for annual and interim periods beginning after December 15, 2016. We adopted this ASU effective January 1, 2017, and as a result, we recorded a $0.4 million increase to our non-current deferred tax asset and retained earnings for tax benefits that were not previously recognized under the prior rules. Additionally, on a prospective basis, we recorded excess tax benefits as a discrete item in our income tax provision within our condensed consolidated statements of operations. We recorded tax expense of less than $0.1 million and excess tax benefits of $3.0 million within our consolidated statements of operations for the three and nine-month periods ended September 30, 2017, respectively. Historically these amounts were recorded as additional paid-in capital in our condensed consolidated balance sheet. We also elected to prospectively apply the change to the presentation of cash payments made to taxing authorities on the employees' behalf for shares withheld upon stock vesting on our condensed consolidated statements of cash flows for the nine-month period ended September 30, 2017. We have also elected to continue our current policy of estimating forfeitures of stock-based compensation awards at grant date and revising in subsequent periods to reflect actual forfeitures.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which provides specific guidance on eight cash flow classification issues not specifically addressed by U.S. GAAP. The ASU is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The standard should be applied using a retrospective transition method unless it is impractical to do so for some of the issues. In such case, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company does not expect an impact on its consolidated financial statements and related disclosures upon implementation of ASU 2016-15 on January 1, 2018.

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, which provides guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The ASU is effective for annual and interim periods beginning after December 15, 2017. The impact on our consolidated financial statements and related disclosures will depend on the facts and circumstances of any specific future transactions.

In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment, which eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge (Step 2 of the goodwill impairment test). Instead, impairment will be measured using the difference of the carrying amount to the fair value of the reporting unit. The ASU is effective for annual and interim periods beginning after December 15, 2019. Early adoption is permitted. The Company is evaluating the effect that ASU 2017-04 will have on its consolidated financial statements and related disclosures and the effect of the standard on its ongoing financial reporting.