CO-69: Day Outlier Amount

What Does CO-69 Mean?

With CO (Contractual Obligation), the CARC 69 adjustment for day outlier amount is a contractual reduction. The provider absorbs this amount per the payer contract or regulatory payment methodology. The patient is not responsible for the adjusted amount. Review the remittance to confirm the adjustment is consistent with your contract terms.

CARC 69 means the payer adjusted the payment based on day outlier amount. The reimbursement was calculated using the payer's fee schedule, contracted rate, or regulatory payment methodology rather than the billed charge.

Common scenarios that trigger this adjustment include: the inpatient length of stay exceeds the expected days for the DRG, triggering a day outlier payment calculation; The payer applies a day outlier payment methodology for extended inpatient stays; A per diem rate is applied for days beyond the DRG geometric mean length of stay. The group code paired with CARC 69 determines who bears the financial responsibility — CO places it on the provider as a contractual obligation, OA indicates a coordination of benefits or other payer adjustment, PR shifts it to the patient.

Common Causes

How to Resolve

1. Review the adjustment against contract terms Compare the CO-69 adjustment with your payer contract to confirm the reduction is consistent with agreed terms or regulatory methodology.
2. Verify the adjustment amount Confirm the dollar amount of the adjustment is calculated correctly based on the contracted rate and the service provided.
3. Appeal if the adjustment is incorrect If the DRG assignment is incorrect (should be a higher-weighted DRG), appeal with clinical documentation supporting the correct DRG. If the length of stay data is wrong, provide corrected admission/discharge dates. If the day outlier calculation itself is mathematically incorrect, appeal with the correct calculation.
4. Process the contractual adjustment If the adjustment is correct per contract terms, process it accordingly in your billing system. This amount cannot be transferred to the patient.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-69:

How to Prevent CO-69

• Ensure accurate DRG coding for inpatient claims
• Document medical necessity for extended stays
• Monitor length of stay against DRG expectations
• Review day outlier policies for each payer

Also Filed As

The same CARC 69 may appear with different Group Codes:

Related Denial Codes