OA-A6: Prior Hospitalization or 30-Day Transfer Requirement Not Met

What Does OA-A6 Mean?

When paired with Group Code OA, the prior hospitalization requirement was not met per the other payer's criteria during coordination of benefits processing. Provide documentation of the qualifying stay to the adjusting payer.

CARC A6 indicates the payer denied the claim because a required prior hospitalization or 30-day transfer condition was not met. Certain services — most commonly skilled nursing facility (SNF) admissions under Medicare — require the patient to have had a qualifying inpatient hospital stay within a specified period (typically 30 days) before the current admission or service.

The denial may occur because no qualifying prior hospitalization was found in the payer's records, the prior stay was outside the required time window, the patient was not formally transferred from a qualifying facility, documentation of the qualifying stay was not included with the claim, or incorrect admission dates prevented the system from recognizing the qualifying stay.

The most common resolution path is locating documentation of the qualifying prior hospitalization and submitting it with an appeal. If the prior stay exists but was at a different facility, obtaining records from that facility may be necessary.

Common Causes

How to Resolve

1. Review COB details Check the other payer's transfer requirement criteria.
2. Provide documentation Submit prior hospitalization documentation to the adjusting payer.

How to Prevent OA-A6

• Verify prior hospitalization requirements with all payers involved in COB
• Submit complete documentation of qualifying stays to all applicable payers

Also Filed As

The same CARC A6 may appear with different Group Codes:

Related Denial Codes