42 CFR §423.576
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The coverage determination is binding on the Part D plan sponsor and the enrollee unless it is reviewed and revised under §§ 423.580 through 423.604 and §§ 423.2000 through 423.2140 or is reopened and revised under § 423.1978.