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31
CO - Contractual ObligationCoverage
Denial Code CO-31: Patient Not Identified as Covered
What Does Code 31 Mean?
Patient cannot be identified as our insured. The payer cannot locate the patient in their system with the information provided.
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?
Incorrect member ID, name mismatch, or date of birth error on the claim.
How to Resolve It
- 1Verify the patient's insurance ID and demographics
- 2Correct any mismatched data and resubmit
- 3Contact the payer to verify enrollment
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