OA-182: Procedure Modifier Invalid on Date of Service

What Does OA-182 Mean?

With OA (Other Adjustments), the invalid modifier was flagged during coordination of benefits processing. Correct the modifier and resubmit the claim through the proper COB sequence.

CARC 182 indicates that a modifier appended to a procedure code on the claim was either expired, not yet effective, or otherwise invalid for the date of service. Modifiers provide additional information about how or where a service was performed, and like procedure codes, they have defined validity periods.

This denial commonly occurs after annual coding updates when modifiers are retired or replaced, when billing systems are not updated with current modifier tables, or when an incorrect modifier is applied due to a data entry error. The resolution is to identify the correct modifier and resubmit the claim.

How to Resolve

1. Identify the correct modifier Determine the valid modifier for the date of service.
2. Resubmit to the primary payer first Submit the corrected claim to the primary payer, then forward the EOB to secondary payers.

How to Prevent OA-182

• Validate modifiers before submitting claims to any payer
• Use automated scrubbing tools that check modifier validity dates

Also Filed As

The same CARC 182 may appear with different Group Codes:

Related Denial Codes