Additional Medicare Secondary Payer (MSP) Claims Processing Instructions for the Common Working File, Medicare Part B, and Durable Medical Equipment (DME) Shared Systems Regarding Medicare Secondary Payer Claims that Contain a Claim Adjustment Reason Code (CARC) 19, 20 or 21
This change request instructs CWF to compare the DX code from each line to what is in the MSP auxiliary records and what action contractors and shared systems must take if DX codes on the claim do not match the DX codes found in the beneficiary MSP Auxiliary record. This change request replaces instructions found only in BR 6427.7.3 through 6427.7.6.2.of CR 6427.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: April 29, 2010
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