U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 42Chapter IVPart 423Subpart J - Subpart J—Coordination of Part D Plans With Other Prescription Drug Coverage
§ 423.452 - Scope.
§ 423.454 - Definitions.
§ 423.458 - Application of Part D rules to certain Part D plans on and after January 1, 2006.
§ 423.462 - Medicare secondary payer procedures.
§ 423.464 - Coordination of benefits with other providers of prescription drug coverage.
§ 423.466 - Timeframes for coordination of benefits and claims adjustments.
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