CO-208: National Provider Identifier Not Matched
National Provider Identifier (NPI) is not matched. The NPI submitted does not match the payer's records for the provider or entity.
Why Claims Get Denied with CO-208
Denial code CO-208 is triggered when national provider identifier (npi) is not matched. the npi submitted does not match the payer's records for the provider or entity. Understanding the root causes helps prevent future denials and strengthens your appeal when one occurs.
NPI on the claim does not match the provider enrolled with the payer
Individual NPI used when organizational NPI is required or vice versa
Provider enrolled under a different NPI than the one submitted
NPI deactivated or not yet activated in NPPES
How to Appeal CO-208
Verify the correct NPI through the NPPES NPI Registry. Confirm which NPI (Type 1 individual or Type 2 organizational) the payer requires. If the provider recently changed organizations, ensure the new NPI is enrolled with the payer. Resubmit with the correct NPI.
Documentation Required for Appeal
A successful appeal of CO-208 requires thorough documentation. Gather these items before drafting your appeal letter:
NPPES NPI registry verification
Corrected claim with the matching NPI
Provider enrollment confirmation from the payer
Documentation of the correct NPI type required
How to Prevent CO-208 Denials
Regularly verify provider NPIs in the NPPES registry. Confirm NPI enrollment status with each payer. Use the correct NPI type (individual vs. organizational) per payer requirements.
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