Why was my insurance claim denied?
When an insurer denies or reduces a claim, it cites a Claim Adjustment Reason Code (CARC) on your Explanation of Benefits. These public codes explain the 'why' behind a denial.
Find your code below to understand what it means in plain English and what your next step can be.
- CO-1 — Deductible amount Patient responsibility
- CO-16 — Claim lacks information Administrative
- CO-18 — Duplicate claim or service Administrative
- CO-2 — Coinsurance amount Patient responsibility
- PR-204 — Not covered under the plan Non-covered
- CO-22 — Covered by another payer Coordination of benefits
- CO-29 — Time limit for filing has expired Administrative
- CO-3 — Copayment amount Patient responsibility
- CO-45 — Charge exceeds fee schedule Contractual
- CO-50 — Not deemed medically necessary Medical necessity
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