CO-104: Managed Care Withhold

What Does CO-104 Mean?

With CO (Contractual Obligation), the CARC 104 adjustment for managed care withhold 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 104 means the payer adjusted the payment based on managed care withhold. 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 managed care contract includes a withhold provision where a percentage of each payment is retained by the payer and may be returned based on performance metrics or utilization targets; A portion of payment is withheld pending the provider meeting quality performance targets specified in the managed care agreement; The managed care plan withholds a percentage of payments that may be returned if the provider meets utilization benchmarks, such as reduced ER visits or referral rates. The group code paired with CARC 104 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-104 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. 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-104:

How to Prevent CO-104

• Understand and document all managed care withhold provisions during contract negotiation
• Track withhold percentages and reconciliation schedules for each managed care contract
• Monitor performance metrics that determine withhold return eligibility
• Negotiate reasonable withhold percentages and clear performance criteria during contract renewal
• Maintain reporting systems that track withheld amounts by payer for accurate revenue forecasting

Also Filed As

The same CARC 104 may appear with different Group Codes:

Related Denial Codes