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Reason/Remark Code Lookup

Use the Code Lookup to find the narrative for ANSI Claim Adjustment Reason Codes (CARC) and Remittance Advice Remark Codes (RARC). You can also search for Part A Reason Codes.

  • Claim Adjustment Reason Codes explain why a claim was paid differently than it was billed.
  • Remittance Advice Remark Codes provide additional information about an adjustment already described by a CARC and communicate information about remittance processing.

See a complete list of all current and deactivated Claim Adjustment Reason Codes and Remittance Advice Remark Codes on the X12.org website. (These code lists were previously published by Washington Publishing Company (WPC).)

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