CO-16Contractual Adjustment

Missing information or submission error

What this code means

The claim is incomplete. A required field such as patient ID, provider NPI, or supporting documentation is missing or incorrect.

What to do next

This is almost always a provider billing error. Contact your provider billing department and ask them to correct and resubmit the claim. You should not owe anything while this is being resolved.

Appeal outlook: Very high when corrected and resubmitted

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