Back to All Codes
207
CO - Contractual ObligationCoding/Billing
Denial Code CO-207: NPI Invalid
What Does Code 207 Mean?
National Provider Identifier - Invalid format or not a valid NPI. The NPI number submitted is not in the correct format or does not exist in NPPES.
Group Code CO (Contractual Obligation): The provider has agreed to accept the payer's determination. The patient is generally not responsible for this amount.
Why Does This Happen?
Typo in the NPI or using a deactivated NPI.
How to Resolve It
- 1Verify the NPI at nppes.cms.hhs.gov
- 2Correct the NPI and resubmit
Want the full strategy?
The P2P Playbook covers payer-specific approaches for denial code CO-207 -- plus 15 denial objections with word-for-word responses, what reviewers are actually thinking, and the 60-second prep framework. Written by a medical director who reviewed cases for major payers.
Get The P2P Playbook -- $39