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16
CO - Contractual ObligationCoding/Billing
Denial Code CO-16: Missing Information
What Does Code 16 Mean?
Claim/service lacks information or has submission/billing error(s) which is needed for adjudication. Could be missing demographics, invalid NPI, or missing modifiers.
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?
Required claim fields were left blank or contain invalid data.
How to Resolve It
- 1Review the remittance advice for the specific missing element
- 2Correct the claim data and resubmit
- 3Verify patient demographics and provider NPI
- 4Check that all required fields are populated