How do I resolve a CO-196 denial?

Verify coordination of benefits sequence and prior payer's EOB: Confirm that the prior payer's coverage determination is correctly reflected and that this payer is appropriately secondary or tertiary in the payment order. Post contractual adjustment to patient account: Apply the CO-196 adjustment as a provider write-off and ensure the amount is not transferred to patient responsibility in the billing system. Document the prior payer determination in account notes: Record which payer made the original coverage determination and the basis for this secondary payer's contractual adjustment for audit and reference purposes.

835 Denial Combination

CO-196

Contractual Obligation · Service-Line Level Adjustment

Contractual Obligation

What This Combination Means

This adjustment indicates that a previous payer in the coordination of benefits sequence already made a coverage decision that this payer is honoring. The current payer is denying or adjusting payment based on what the prior payer determined, and the provider must accept this as a contractual write-off. No patient balance can be transferred for this adjustment amount.

Financial Responsibility

provider writeoff

The provider must write off the adjusted amount per contractual obligations with the secondary or tertiary payer, who is bound by the prior payer's coverage determination. This amount cannot be collected from the patient.

N/A

Appeal Success

Immediate (write-off)

Avg. Resolution

Easy

Difficulty

Appealable

Step-by-Step Resolution

Steps tailored specifically to this CO-196 combination — not generic advice.

Not Appealable:This is a contractual adjustment based on coordination of benefits rules where the current payer defers to the prior payer's coverage determination per network agreements.

1
Verify coordination of benefits sequence and prior payer's EOB
Confirm that the prior payer's coverage determination is correctly reflected and that this payer is appropriately secondary or tertiary in the payment order.
2
Post contractual adjustment to patient account
Apply the CO-196 adjustment as a provider write-off and ensure the amount is not transferred to patient responsibility in the billing system.
3
Document the prior payer determination in account notes
Record which payer made the original coverage determination and the basis for this secondary payer's contractual adjustment for audit and reference purposes.

Specialty Context

How CO-196 typically presents across different practice types.

Dental

Common when dental benefits are split between medical and dental plans, where the medical plan may deny based on determination that services are dental in nature and the dental plan honors that coverage decision.

Medical

Frequently appears in coordination of benefits scenarios involving Medicare-Medicaid, worker's compensation followed by health insurance, or when auto insurance is primary and health insurance defers to the auto carrier's coverage determination.

Behavioral Health

May occur when mental health or substance abuse services are carved out to specialty payers, and the medical plan denies based on the behavioral health payer's prior determination about coverage or medical necessity.

Individual Code References

View the standalone definition for each code in this combination.

CARC 196

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Synthesized from official definitions — not from training data

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