OA-69: Day Outlier Amount
The day outlier adjustment is flagged for the secondary payer. Submit the balance to the next payer in the billing sequence.
What Does OA-69 Mean?
OA-69 appears in coordination of benefits situations where the primary payer's day outlier adjustment is passed to a secondary payer. The amount under OA does not represent a direct provider loss — it is an informational adjustment that signals the secondary payer should evaluate the remaining per-diem balance.
When CARC 69 appears on your remittance, the payer is signaling that the daily charges for a portion of the inpatient stay were adjusted because they exceeded the expected or allowable amount under the payment methodology. This is a day-level outlier — distinct from CARC 70 (cost outlier), which addresses total case-level charges.
In a DRG-based payment environment, payers establish expected lengths of stay and per-diem payment caps for each diagnosis group. When a patient's stay extends beyond the DRG-expected days, the additional days may be reimbursed at a reduced per-diem rate or denied entirely, depending on the payer's outlier policy. CARC 69 captures this adjustment. It most frequently appears with Group Code CO, indicating the day outlier amount is a contractual write-off under the provider's participation agreement.
The OA group code appears less frequently, typically in coordination of benefits scenarios where the day outlier adjustment from the primary payer needs to be passed to a secondary payer. In either case, the root cause usually traces back to extended lengths of stay that are not sufficiently supported by clinical documentation or exceed contractual limits. Tracking CARC 69 patterns by DRG can reveal opportunities for clinical documentation improvement and utilization management.
Common Causes
| Cause | Frequency |
|---|---|
| Coordination of benefits day outlier adjustment In multi-payer situations, the primary payer's day outlier adjustment shifts remaining day charges to the secondary payer for evaluation | Most Common |
| Medicare secondary payer situation When Medicare is the secondary payer, day outlier amounts from the primary payer are adjusted under OA for proper claim processing | Common |
How to Resolve
Verify the day outlier calculation against the DRG payment terms and length-of-stay records, then write off or challenge the adjustment depending on accuracy.
- Identify the secondary payer Check patient records for secondary or tertiary coverage. Prepare to forward the day outlier balance with the primary ERA.
- Submit to the secondary payer File a secondary claim with the primary remittance data showing the OA-69 adjustment. The secondary payer will adjudicate the per-diem charges under its own payment rules.
- Process the secondary ERA When the secondary remittance arrives, post the payment or adjustment accordingly. Any residual balance after all payers adjudicate may become the patient's responsibility.
This adjustment is typically correct as processed. Review the specific circumstances before taking further action.
How to Prevent OA-69
- Verify all insurance coverage at admission to ensure proper COB sequencing from the start
- Set up automated secondary claim workflows triggered by OA adjustments on primary remittances
General Prevention
- Collect and verify all insurance coverage details during patient registration to ensure proper coordination of benefits sequencing
- Set up automated secondary claim submission workflows that trigger when OA adjustments appear on primary remittances
Also Filed As
The same CARC 69 may appear with different Group Codes:
Related Denial Codes
Sources
- https://www.mdclarity.com/denial-code/69
- https://ambci.org/medical-billing-and-coding-certification-blog/guide-to-claim-adjustment-reason-codes-carcs
- https://www.sprypt.com/denial-codes/carc-and-rarc-codes
- Codes maintained by X12. Visit x12.org for official definitions.