The unaudited pro forma condensed consolidated financial information is subject to the assumptions and adjustments described in the accompanying notes.

COMMUNITY HEALTH SYSTEMS, INC.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

On July 22, 2025, CHS/Community Health Systems, Inc. ( CHS ), a wholly-owned subsidiary of Community Health Systems, Inc. (the Company ), entered into a definitive asset purchase agreement, as amended (the Purchase Agreement ), with Laboratory Corporation of America Holdings (the Purchaser ), providing for the sale of select assets and assume certain leases of CHS's ambulatory outreach business (collectively, the Ambulatory Outreach Business ) across 13 states, including certain patient service centers and in-office phlebotomy locations (the transactions contemplated by the Purchase Agreement, the Transaction ). On December 1, 2025, the Transaction was completed pursuant to the terms of the Purchase Agreement. The purchase price paid to the Company was approximately $194 million cash, before certain transaction expenses.

The Company has determined that the operations of the Ambulatory Outreach Business that were divested in the Transaction do not meet the definition of discontinued operations pursuant to Financial Accountings Standards Board Accounting Standards Codification 205 (ASC 205), Presentation of Financial Statements.

The accompanying unaudited pro forma condensed consolidated balance sheet of the Company is presented as if the Transaction had occurred as of September 30, 2025. The estimated gain on sale in connection with the Transaction is reflected in the unaudited pro forma condensed balance sheet within accumulated deficit.

The accompanying unaudited pro forma condensed consolidated statement of income for the nine months ended September 30, 2025 and the statement of loss for the year ended December 31, 2024 (the Pro Forma Periods ) includes certain pro forma adjustments to illustrate the estimated effect of the Company's disposition, as if the Transaction had occurred on January 1, 2024. The amounts included in the historical columns represent the Company's historical balance sheet and statement of income (loss) for the Pro Forma Periods presented.

The accompanying unaudited pro forma condensed consolidated financial statements have been prepared in accordance with Article 11 of Regulation S-X and do not include all of the information and note disclosures required by generally accepted accounting principles of the United States ( GAAP ). Pro forma financial information is intended to provide information about the continuing impact of a transaction by showing how a specific transaction might have affected historical financial statements. Pro forma financial information illustrates only the isolated and objectively measurable (based on historically determined amounts) effects of a particular transaction, and excludes effects based on judgmental estimates of how historical management practices and operating decisions may or may not have changed as a result of the transaction. Therefore, pro forma financial information does not include information about the possible or expected impact of current actions taken by management in response to the Transaction, as if management's actions were carried out in previous reporting periods.

The unaudited pro forma condensed consolidated financial information is subject to the assumptions and adjustments described in the accompanying notes. These assumptions and adjustments are based on information presently available. Actual adjustments may differ materially from the information presented. The unaudited pro forma condensed consolidated financial statements are based on the historical financial statements of the Company for each period presented and in the opinion of the Company's management, all adjustments and disclosures necessary for a fair presentation of the pro forma data have been made. These unaudited pro forma condensed consolidated financial statements are presented for illustrative purposes only and are not necessarily indicative of the results of operations or financial condition that would have been achieved had events reflected been completed as of the dates indicated, and may not be useful in predicting the impact of the Transaction on the future financial condition and results of operations of the Company due to a variety of factors. These unaudited pro forma condensed consolidated financial statements and the notes thereto should be read in conjunction with the Company's financial statements for the year ended December 31, 2024, included in the Company's Annual Report on Form 10-K filed on February 19, 2025.

NOTES TO THE UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following items resulted in adjustments in the unaudited pro forma condensed consolidated financial information:

a)Adjustment represents consideration received from the sale of the Ambulatory Outreach Business of approximately $194 million, less transaction expenses. Approximately $19 million of consideration received is held in escrow and is reflected as a receivable within the condensed consolidated balance sheet.

b)Adjustments represent the elimination of assets and liabilities held for sale attributable to the Ambulatory Outreach Business.

c)Adjustments represent the impact to income taxes associated with the sale of the Ambulatory Outreach Business. The income tax expense for the nine months ended September 30, 2025 relates to the elimination of revenues, costs and expenses set forth in Note (e). For the twelve months ended December 31, 2024, income tax expense of approximately $7 million related to the elimination of revenues, costs and expenses set forth in Note (e) plus income tax expense of approximately $27 million related to the sale. The estimated tax effect of pro forma adjustments is calculated at the statutory rate for the respective period adjusted for discrete impacts including changes in valuation allowances.

d)Adjustments reflect a $107 million pre-tax gain ($80 million after tax) on sale of the Ambulatory Outreach Business calculated as follows:

e)Adjustments reflect the elimination of revenues, costs and expenses directly attributable to the Ambulatory Outreach Business. Adjustments do not include certain general corporate overhead costs previously allocated to the Ambulatory Outreach Business that will have a continuing effect on the Company post-closing.