---
kind: "section"
citation: "42 C.F.R. § 423.301"
title: "42"
number: "423.301"
heading: "Scope."
url: "https://uscodex.org/cfr/42/423.301"
---

# §423.301. Scope.


This subpart sets forth rules for the calculation and payment of CMS direct and reinsurance subsidies for Part D plans; the application of risk corridors and risk-sharing adjustments to payments; and retroactive adjustments and reconciliations to actual enrollment and interim payments. This subpart does not apply to fallback entities or fallback prescription drug plans.


## Notes

### Authority

Authority: 42 U.S.C. 1302, 1306, 1395w-101 through 1395w-152, and 1395hh.

### Source

Source: 70 FR 4525, Jan. 28, 2005, unless otherwise noted.