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204
CO - Contractual ObligationCoverageP2P Recommended
Denial Code CO-204: Service Not Covered by Plan
What Does Code 204 Mean?
This service/equipment/drug is not covered under the patient's current benefit plan.
Group Code CO (Contractual Obligation): The provider has agreed to accept the payer's determination. The patient is generally not responsible for this amount.
Why Does This Happen?
The specific service or drug is excluded from the patient's benefit plan.
How to Resolve It
- 1Verify the exclusion with the payer
- 2Check if an alternative covered service exists
- 3Request a coverage exception with clinical documentation
- 4If medically necessary, appeal with supporting evidence
This Denial Is Often Overturned With a Peer-to-Peer Call
When you receive denial code CO-204, the most effective next step is usually a peer-to-peer (P2P) call with the payer's medical director. During this call, you can present your clinical reasoning directly and often get the denial reversed on the spot.
Our free P2P Call Prep Tool generates a structured script based on your specific case, the payer involved, and the denial reason -- so you walk into the call prepared and confident.