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Denial Code 231

CARC 231: Mutually exclusive procedures cannot be done in the same day/setting

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

227
Information requested from the patient/insured was missing/incomplete. Remark code require…
228
Denied for failure of this provider, another provider or the subscriber to supply requeste…
229
Partial charge amount not considered by Medicare due to the initial claim Type of Bill bei…
232
Institutional Transfer Amount
233
Services/charges related to the treatment of a hospital-acquired condition or preventable …
234
This procedure is not paid separately. Remark code required

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