SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The interim unaudited consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of results of operations, comprehensive income, financial condition, cash flows and stockholders' equity for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s 2017 Annual Report on Form 10-K. The year-end balance sheet data was derived from the audited consolidated financial statements as of December 31, 2017, but does not include all the disclosures required by accounting principles generally accepted in the United States (“GAAP”).

The accounting policies of the Company are the same as those set forth in Note 2 to the consolidated financial statements contained in the Company’s 2017 Annual Report on Form 10-K except for the impact of the adoption of new accounting standards discussed under New Accounting Pronouncements.

Reclassifications

As a result of the adoption of the new accounting standard associated with clarifying presentation and classification in the statement of cash flows, certain reclassifications have been made to the prior period financial statements to conform with the current period presentation. In addition, the Company adopted the new revenue recognition accounting standard on a full retrospective basis, which required the Company to restate certain previously reported results. For further details regarding the impact of these new accounting standards, see New Accounting Pronouncements.

Use of Estimates

The preparation of financial statements in conformity with 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 revenues and expenses during the reporting period. Actual results could differ from those estimates.

Earnings Per Share

The Company's unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities.

New Accounting Pronouncements

Adoption of New Accounting Standards

On January 1, 2018, the Company adopted a new accounting standard issued by the Financial Accounting Standards Board ("FASB") on revenue recognition using the full retrospective method. This new accounting standard outlines a single comprehensive model to use in accounting for revenue arising from contracts with customers. This standard supersedes existing revenue recognition requirements and eliminates most industry-specific guidance from GAAP. The core principle of the revenue recognition standard is to require an entity to recognize as revenue the amount that reflects the consideration to which it expects to be entitled in exchange for goods or services as it transfers control to its customers. As a result of the Company's adoption of this standard, the majority of the amounts that were historically classified as bad debt expense, primarily related to patient responsibility, are now considered an implicit price concession in determining net revenue. Accordingly, the Company reports uncollectible balances associated with patient responsibility as a reduction of the transaction price and therefore as a reduction in net revenues when historically these amounts were classified as bad debt expense within selling, general and administrative expenses. In addition, the adoption of this new accounting standard resulted in increased disclosure, including qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. For further details, see Note 3.

Adoption of the standard impacted the Company's previously reported results as follows:



	As Previously Reported		Adjustment for New Accounting Standard on Revenue Recognition			As Restated
Three Months Ended June 30, 2017

Consolidated Statement of Operations:
Net revenues	$	1,943	$	(79	)	$	1,864
Selling, general and administrative expenses	$	437	$	(79	)	$	358
Net income attributable to Quest Diagnostics	$	193	$	—		$	193



	As Previously Reported			Adjustment for New Accounting Standard on Revenue Recognition			As Restated
Six Months Ended June 30, 2017

Consolidated Statement of Operations:
Net revenues	$	3,842		$	(161	)	$	3,681
Selling, general and administrative expenses	$	874		$	(161	)	$	713
Net income attributable to Quest Diagnostics	$	357		$	—		$	357

Consolidated Statements of Cash Flows:
Provision for doubtful accounts	$	165		$	(161	)	$	4
Changes in operating assets and liabilities:
Accounts receivable	$	(185	)	$	161		$	(24	)

Balance, December 31, 2017

Consolidated Balance Sheets:
Accounts receivable	$	1,193		$	(256	)	$	937
Allowance for doubtful accounts	$	269		$	(256	)	$	13
Accounts receivable, net of allowance for doubtful accounts	$	924		$	—		$	924

On January 1, 2018, the Company adopted a new accounting standard issued by the FASB on the recognition and measurement of financial assets and financial liabilities. This new accounting standard requires that all equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) be measured at fair value with changes in fair value recognized in net income. However, companies may elect to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. In addition, the new accounting standard eliminated the requirement to disclose the method and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost on the balance sheet. The adoption of this standard did not have a material impact on the Company's results of operations, financial position, or cash flows.

On January 1, 2018, the Company adopted two new accounting standards issued by the FASB that clarify presentation and classification in the statement of cash flows on a retrospective basis. As a result of adoption:

•

Amounts generally described as restricted cash and restricted cash equivalents are now presented with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. As a result of adoption, there was no impact to cash flows from operating, investing or financing activities for the six months ended June 30, 2018 and no impact to cash flows from operating or financing activities for the six months ended June 30, 2017. $25 million of escrow proceeds associated with the disposition of the Focus Diagnostics products business in May 2016, which was previously reported as a cash inflow from investing activities for the six months ended June 30, 2017, is no longer presented within the net change in cash and cash equivalents and restricted cash as it is included in the beginning-of-period balance of restricted cash. Refer to Note 6 to the consolidated financial statements contained in the Company’s 2017 Annual Report on Form 10-K for more information regarding the disposition of the Focus Diagnostics products business.


•	The classification of how certain cash receipts and payments are presented within the statement of cash flows has been clarified. As a result, cash payments for debt retirement costs are now presented as a financing cash outflow in the consolidated statement of cash flows. There were no debt retirement costs for the six months ended June 30, 2018 and 2017.

On January 1, 2018, the Company adopted a new accounting standard issued by the FASB that provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business. If an entity determines that substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, then the set of transferred assets and activities is not a business. If this threshold is not met, in order to be considered a business the set of transferred assets and activities must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. The adoption of this standard, which was done on a prospective basis, will require future transactions to be evaluated under the new framework.

On April 1, 2018, the Company elected to adopt a new accounting standard issued by the FASB to reclassify stranded tax effects resulting from enactment of the Tax Cuts and Jobs Act ("TCJA") from accumulated other comprehensive income to retained earnings. The adoption of this standard did not have a material impact on the Company's results of operations, financial position or cash flows.

New Accounting Standards To Be Adopted

In February 2016, the FASB issued an Accounting Standard Update ("ASU") that amends accounting for leases. Under the new guidance, a lessee will recognize assets and liabilities for most leases on its balance sheet but will recognize expense on its statement of operations similar to current lease accounting. The ASU is effective for the Company in the first quarter of 2019 with early adoption permitted. The new guidance must be adopted using a modified retrospective transition approach, and provides for certain practical expedients. The adoption of this ASU will result in a significant increase to the Company’s balance sheet for lease liabilities and right-of-use assets, which has not yet been quantified. The Company is currently assessing the impact of the adoption of this ASU on the Company’s results of operations, financial position and cash flows. Significant implementation matters being addressed by the Company include implementing an integrated third-party lease accounting application, assessing the impact to its internal controls over financial reporting and documenting the new lease accounting process.

In June 2016, the FASB issued an ASU that changes the impairment model for most financial instruments, including trade receivables, from an incurred loss method to a new forward-looking approach, based on expected losses. The estimate of expected credit losses will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. This ASU is effective for the Company in the first quarter of 2020 and must be adopted using a modified retrospective transition approach. The Company is currently assessing the impact of the adoption of this ASU on the Company’s results of operations, financial position and cash flows.