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163
CO - Contractual ObligationDocumentation
Denial Code CO-163: Attachment/Documentation Not Received
What Does Code 163 Mean?
Attachment/other documentation that was requested to adjudicate this claim/service was not received or was insufficient.
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?
Requested medical records or documentation was not submitted within the required timeframe.
How to Resolve It
- 1Gather the requested documentation immediately
- 2Submit records with the claim reference number
- 3Request an extension if still gathering records
- 4Resubmit the claim with all required attachments
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