Search a CARC (Claim Adjustment Reason Code) or RARC (Remittance Advice Remark Code) — like CO-16, PR-204, OA-109, or N130 — to see the official description plus a working biller's guide to why it happens, what to check, and how to correct or appeal it. Now covering Contractual (CO), Patient Responsibility (PR), and Other Adjustment (OA) reason codes, plus the most common remark codes seen on real remittance advice.
No codes match that search. Try just the number (e.g. “16”) or a keyword like “authorization” or “duplicate.”