{"data":{"id":"us/42-cfr-423.642","jurisdiction":"us","citation":"42 CFR 423.642","heading":"Notice of contract determination.","body":"(a) When CMS makes a contract determination under § 423.641, it gives the PDP sponsor written notice.\n(b) The notice specifies the—\n(1) Reasons for the determination; and\n(2) The Part D sponsor's right to request a hearing.\n(c) CMS-initiated terminations—(1) General rule. Except as provided in (c)(2) of this section, CMS mails notice to the Part D plan sponsor 45 calendar days before the anticipated effective date of the termination.\n(2) Exception. If a contract is terminated in accordance with § 423.509(b)(2)(i) of this part, CMS notifies the Part D plan sponsor of the date that it will terminate the Part D plan sponsor's contract.\n(d) When CMS determines that it will not authorize a contract renewal, CMS mails the notice to the Part D sponsor by August 1 of the current contract year.","path":["Title 42—Public Health","CHAPTER IV—CENTERS FOR MEDICARE \u0026 MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER B—MEDICARE PROGRAM","PART 423—VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT","Subpart N—Medicare Contract Determinations and Appeals"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-42.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:11Z","sha256":"2bbcdffafe18d905b2e5557a19fd4fd3b5146fba32699b0cf5046f141b768c36","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-423.641","next":"us/42-cfr-423.643"},"notice":"GroundRules: Original legal text. Not legal advice."}