# Most Favored Nation (MFN) Model
> **Centers for Medicare and Medicaid Services** · Final rule. · Published 2021-12-29 · Effective 2022-02-28 · 86 FR 73986
## Document
- **Document number:** 2021-28225
- **Category:** other
- **Sub-agency:** Centers for Medicare and Medicaid Services
- **Federal Register citation:** 86 FR 73986
- **CFR reference:** 42 CFR 513
- **Publication date:** 2021-12-29
- **Effective date:** 2022-02-28
- **HHS docket:** CMS-5528-F
## Abstract

This final rule rescinds the Most Favored Nation Model interim final rule with comment period that appeared in the November 27, 2020, Federal Register.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/12/29/2021-28225/most-favored-nation-mfn-model)
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