R13621OTN

Transmittal #
R13621OTN
Issue Date
2026-02-11
Subject

Medicare Administrative Contractors (MACs) Part B, the Multi- Carrier System (MCS)
and Durable Medicare Equipment (DME) MACs Updates on Processing Medicare Secondary Payer
(MSP) Claims Containing Certain Claim Adjustment Reason Codes (CARCs)

Implementation Date
2026-07-06
CR #
14318
Publication #
100-20
Transmittal Year
2026

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