CO-207Contractual ObligationProvider Enrollment
CO-207 Denial Code: NPI invalid format
An NPI on the claim fails format validation (not 10 digits / fails the check-digit).
Why CO-207 happens
- ●Typo or truncated NPI
- ●Legacy ID entered in the NPI field
How to fix a CO-207 denial
- 1
Correct the NPI (verify at NPPES) and resubmit
How to prevent it
Luhn check-digit validation on NPI entry in your systems.
Drowning in CO-207 denials?
OakClaim works every denial within 48 hours and builds prevention rules so they stop recurring.