A Claim Adjustment Reason Code, or CARC, explains the general reason a payer adjusted, denied, or assigned responsibility on a claim or service line.
What is a CARC code in denial management?
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Detailed Answer
CARC codes are standardized remittance codes used to describe why a payer changed the billed amount.
They may indicate issues such as:
- Patient responsibility
- Contractual adjustment
- Authorization problems
- Duplicate processing
- Coverage issues
- Coding or bundling edits
CARC interpretation should be combined with the remittance group code, any RARC, payer message, claim history, and payer policy.
The same CARC can lead to different next steps depending on the surrounding information.
Key Points to Mention
- CARC gives the adjustment reason.
- CARC should be read with RARC and group codes.
- The code alone may not explain the full root cause.
- Next action depends on context.
Example Scenario
A denial shows a CARC related to authorization. The AR representative also reviews the RARC and payer portal because the exact issue may be missing authorization, invalid authorization, or a mismatch with the billed service.
Common Mistakes
- Using CARC alone without other remittance data.
- Assuming every CARC has one universal resolution.
- Ignoring payer-specific messages.
Interview Tip
Explain that CARC is the reason category, not always the full resolution instruction.