HIPAA instructs health plans to be able to conduct standard electronic transactions using valid standard codes. Medicare policy states that Claim Adjustment Reason Codes (CARCs) are required in the remittance advice and coordination of benefits transactions. Medicare policy further states that Remittance Advice Remark Codes (RARCs) are required in the remittance advice transaction.
On or after April 2, 2012, all Medicare Remit Easy Print (MREP) and PC-Print users must download the code update file to be used in conjunction with the current updated MREP software. Instructions for downloading and installing the MREP software and/or code update file can be found in the MREP User Guide on the CMS website.