12Denial Code (CARC)Active
CO 12 Denial Code - Fix Provider Type Mismatch
Code 12 indicates that the diagnosis submitted on the claim does not align with the provider type. This typically means the diagnosis is not one that the payer expects to see from the type of provider who submitted the claim. The 835 may include additional details in the Healthcare Policy Identification Segment to clarify this mismatch.
Who Pays: Group Code Liability
For code 12, the group code is typically CO, meaning this is a contractual obligation and not billable to the patient. The provider must address the mismatch to receive payment.
Why Claims Get Code 12
- The diagnosis code submitted is not typically associated with the provider's specialty.
- An incorrect provider type was selected during claim submission.
- The provider's credentials do not match the diagnosis codes used.
- The claim was submitted under a provider NPI that does not match the specialty required for the diagnosis.
- Payer-specific rules about provider types and diagnoses were not followed.
How to Fix & Resubmit
- Verify that the diagnosis code is appropriate for the provider's specialty.
- Check that the provider's NPI and type are correctly listed on the claim.
- Review payer-specific guidelines for provider type and diagnosis compatibility.
- If the diagnosis is correct, contact the payer to understand the mismatch specifics.
- Submit a corrected claim with the appropriate diagnosis or provider information.
Corrected Claim or Appeal?
For code 12, a corrected claim is appropriate once the diagnosis or provider type mismatch is resolved. Appeals are not typically needed unless the payer's determination is disputed after correction.
Preventing Future 12 Denials
- Ensure diagnosis codes align with provider specialty before claim submission.
- Maintain up-to-date provider credentialing information in billing systems.
- Regularly review payer guidelines for diagnosis and provider type compatibility.
- Implement pre-submission checks to catch provider type and diagnosis mismatches.