---
kind: "section"
citation: "42 C.F.R. § 423.516"
title: "42"
number: "423.516"
heading: "Prohibition of midyear implementation of significant new regulatory requirements."
url: "https://uscodex.org/cfr/42/423.516"
---

# §423.516. Prohibition of midyear implementation of significant new regulatory requirements.


CMS may not implement, other than at the beginning of a calendar year, regulations under this section that impose new, significant regulatory requirements on a PDP sponsor or a prescription drug plan.


## 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.