42 CFR §423.851
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This subpart sets forth—the rights of beneficiaries to a choice of at least two sources of qualified prescription drug coverage; requirements and limitations on the bid submission, review and approval of fallback prescription drug plans, and the determination of enrollee premium and plan payments for these plans.