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Denial Code 181

CARC 181: Procedure code was invalid on the date of service

This is a Claim Adjustment Reason Code (CARC). CARCs explain why a payer adjusted or denied a claim line and appear with a group code (CO, PR, OA, PI). Codes appear on the EOB / ERA after a claim is adjudicated.

Reference only — CARC/RARC are national code sets updated periodically. Verify against the current official list before acting on a denial or appeal.

Related CARC codes

178
Patient has not met the required spend down requirements
179
Patient has not met the required waiting requirements
180
Patient has not met the required residency requirements
182
Procedure modifier was invalid on the date of service
183
The referring provider is not eligible to refer the service billed
184
The ordering provider is not eligible to prescribe/order the service billed

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