Dentovio public answer

CO 251 denial code dental

On a dental remittance, code CO 251 means: The attachment or documentation that was received was incomplete or deficient; the claim cannot be processed until the missing piece arrives. technical: fix and resubmit. Respond with the complete documentation rather than an appeal letter — and use the payer's published documentation checklist for the procedure so the resubmission cannot be judged deficient twice. The paired remark code identifies what was missing.