# Medicare Program; Treatment of Medicare Part C Days in the Calculation of a Hospital's Medicare Disproportionate Patient Percentage
> **Centers for Medicare and Medicaid Services** · Final action. · Published 2023-06-09 · Effective 2023-08-08 · 88 FR 37772
## Document
- **Document number:** 2023-12308
- **Category:** medicare
- **Sub-agency:** Centers for Medicare and Medicaid Services
- **Federal Register citation:** 88 FR 37772
- **CFR reference:** 42 CFR 412
- **Publication date:** 2023-06-09
- **Effective date:** 2023-08-08
- **HHS docket:** CMS-1739-F
## Abstract

This final action establishes a policy concerning the treatment of patient days associated with persons enrolled in a Medicare Part C (also known as "Medicare Advantage") plan for purposes of calculating a hospital's disproportionate patient percentage for cost reporting periods starting before fiscal year (FY) 2014 in response to the Supreme Court's ruling in Azar v. Allina Health Services, 139 S. Ct. 1804 (June 3, 2019).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/06/09/2023-12308/medicare-program-treatment-of-medicare-part-c-days-in-the-calculation-of-a-hospitals-medicare)
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