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Medical Claim Denial Code Lookup — CARC & RARC
Search common remittance codes such as CO-16, CO-29, PR-1, N130 and M15. Find a plain-language issue description and a practical next check before changing or appealing a claim.
Find a claim adjustment or remark code
Denial vs. adjustment
Not every CARC means the entire claim was rejected. An amount-limitation code can describe a contractual reduction on an otherwise paid claim.
Read the denial-code guide →What to review next
Check the claim number, payer, date of service, procedure and diagnosis codes, authorization and timely-filing evidence before editing the original record.
Open CMS-1500 Claim Checker →