Medical Billing Denial Code Lookup
Search common Claim Adjustment Reason Codes (CARCs) and use the remittance advice to guide the next billing follow-up step.
Look up common Claim Adjustment Reason Codes
Search common CARCs by number or description. CARCs explain why a claim or service line was paid differently than billed. Group codes such as CO, PR, OA and PI identify the adjustment category or responsibility.
Example
Searching 45 returns the CARC used when a charge exceeds a fee schedule, maximum allowable amount or contracted/legislated arrangement.
Do not stop at the CARC
Review the full remittance advice. Some CARCs require or are further explained by a Remittance Advice Remark Code (RARC), and payer-specific follow-up may still be necessary.
Enter a CARC or keyword to search the reference list.
Turn the result into an action plan
Use the tool as a starting point, then request a complimentary billing review for help with denials, A/R, coding workflows and revenue-cycle performance.