CO-B7 — Provider not certified/eligible on this date
Claim-adjustment reason code B7 · typically reported as CO-B7
What it means
Your certification, accreditation, or enrollment wasn’t in force for this service on this date of service.
Why DME claims hit it
- Accreditation lapse for the product category billed
- Surety bond or revalidation gaps deactivating the PTAN mid-period
- Billing dates that straddle an enrollment effective date
How to fix it
- Audit enrollment/accreditation effective dates against the DOS; resolve the enrollment gap, then rebill dates within active coverage
Appeal posture
If records show you WERE certified on the DOS, appeal with the certification/enrollment evidence.
Related denial codes
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