CO-208Contractual ObligationProvider Enrollment
CO-208 Denial Code: NPI not matched
The NPI is well-formed but doesn't match the payer's provider records — name, TIN, or enrollment mismatch.
Why CO-208 happens
- ●NPI/TIN combination not enrolled with this payer
- ●Provider name mismatch versus NPPES/payer files
How to fix a CO-208 denial
- 1
Verify the NPI/TIN pairing the payer has on file; correct claim or fix enrollment records
How to prevent it
Keep NPPES and payer enrollment records synchronized after any practice change.
Drowning in CO-208 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.