CO-204: Service Not Covered Under Patient Plan
This service/equipment/drug is not covered under the patient's current benefit plan.
Why Claims Get Denied with CO-204
Denial code CO-204 is triggered when this service/equipment/drug is not covered under the patient's current benefit plan. Understanding the root causes helps prevent future denials and strengthens your appeal when one occurs.
Service excluded from the patient's specific plan
Plan does not cover the category of service (e.g., mental health, chiropractic)
Plan benefit limits exhausted (e.g., maximum PT visits reached)
Out-of-network service without out-of-network benefits
How to Appeal CO-204
Obtain the patient's Summary of Benefits and Coverage (SBC) and verify whether the service is truly excluded. If the service is covered but was miscategorised, resubmit with correct coding. If benefits were exhausted, verify the count with the payer.
Documentation Required for Appeal
A successful appeal of CO-204 requires thorough documentation. Gather these items before drafting your appeal letter:
Patient's Summary of Benefits and Coverage
Eligibility verification showing covered services
Documentation of remaining benefit limits
Corrected coding if service was miscategorised
How to Prevent CO-204 Denials
Verify specific service coverage during eligibility checks, not just active enrolment. Obtain ABNs or financial responsibility forms when coverage is uncertain. Track benefit limits for services with visit caps.
Stop Fighting CO-204 Denials Manually
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