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Denial Code 146

CARC 146: Diagnosis was invalid for the date(s) of service reported

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

142
Monthly Medicaid patient liability amount
143
Portion of payment deferred
144
Incentive adjustment, e.g. preferred product/service
147
Provider contracted/negotiated rate expired or not on file
148
Information from another provider was missing/incomplete. Remark code required
149
Lifetime benefit maximum has been reached for this service/benefit category

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