42 CFR § 423.466 - Timeframes for coordination of benefits and claims adjustments.
---
identifier: "/us/cfr/t42/s423.466"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 423.466 - Timeframes for coordination of benefits and claims adjustments."
title_number: 42
title_name: "Public Health"
section_number: "423.466"
section_name: "Timeframes for coordination of benefits and claims adjustments."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "423"
part_name: "VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 1302, 1306, 1395w-101 through 1395w-152, and 1395hh."
regulatory_source: "70 FR 4525, Jan. 28, 2005, unless otherwise noted."
cfr_part: "423"
---
# 423.466 Timeframes for coordination of benefits and claims adjustments.
(a) *Retroactive claims adjustments, underpayment refunds, and overpayment recoveries.* Whenever a sponsor receives information that necessitates a retroactive claims adjustment, the sponsor must process the adjustment and issue refunds or recovery notices within 45 days of the sponsor's receipt of complete information regarding claims adjustment.
(b) *Coordination of benefits.* Part D sponsors must coordinate benefits with SPAPs, other entities providing prescription drug coverage, beneficiaries, and others paying on the beneficiaries' behalf for a period of 3 years from the date on which the prescription for a covered Part D drug was filled.
[75 FR 19819, Apr. 15, 2010, as amended at 80 FR 7964, Feb. 12, 2015]