Claim Adjustment and Remark Codes (CARC/RARC)

1. Claim Adjustment Reason Codes

   CARC code list explaining why a claim or line was adjusted.

2. Remittance Advice Remark Codes

   RARC supplemental explanations and alert codes.

3. Claim adjustment group codes

   CO contractual, PR patient responsibility, OA other, PI payer initiated and CR corrections.

4. Claim status codes

   Status codes for 277 responses and denials.

5. Claim status category codes

   Category codes for 277 responses.

6. Service type codes

   Service type codes used in 270/271 inquiries.

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