Denials For Reasons Other Than Medical Necessity

100.5.2 - Denials For Reasons Other Than Medical Necessity (Rev. 3721, Issued: 02-24-17, Effective: 05-25-17, Implementation: 05-25-17) If the designated A/B MAC (B) denies the lines due to other reason, the contractor shall use the following remittance advice messages and associated codes when rejecting/denying claims under this policy. This CARC/RARC combination is compliant with CAQH CORE Business Scenario Three. Group Code: CO CARC: 96 RARC: RARC most descriptive of ‘other’ denial reason. CARC 96 requires an accompanying RARC. MSN: 16.10