OA-179: Patient Has Not Met Required Waiting Period

What Does OA-179 Mean?

With OA (Other Adjustments), the waiting period issue was identified during coordination of benefits processing. Review the COB details to determine which payer in the chain flagged the waiting period issue and whether another payer may provide coverage during the gap.

CARC 179 indicates that the patient's insurance plan includes a waiting period for certain benefits, and that period had not elapsed when the service was provided. Waiting periods are common in new enrollment situations where the plan requires a specified number of days or months before a particular benefit activates.

This code is frequently seen with dental and vision plans that impose waiting periods for major services, employer-sponsored plans with enrollment waiting periods, and certain non-ACA-compliant plans with pre-existing condition waiting periods. The service itself may be a covered benefit — it simply was not yet available to the patient on the date it was rendered.

How to Resolve

1. Review COB details Determine which payer identified the waiting period issue and whether the other payer has already satisfied its waiting period.
2. Submit to the appropriate payer If another payer covers the service, submit accordingly.
3. Appeal if the waiting period was met If the waiting period was satisfied, provide enrollment documentation to the payer that flagged the issue.

How to Prevent OA-179

• Verify waiting period status with all payers before providing services
• Track enrollment dates and waiting periods for each payer in the coordination chain

Also Filed As

The same CARC 179 may appear with different Group Codes:

Related Denial Codes