CO-B7 denial code
The provider wasn't certified or eligible to be paid for this service on the date it was provided.
“This provider was not certified/eligible to be paid for this procedure/service on this date of service. …”
Start 01/01/1995 · Last modified 07/01/2017 · X12 adjustment reason code list
What it usually means in behavioral health
B7 is a dates problem. Services delivered before a new clinician's or site's enrollment took effect, or during a lapse in revalidation or recredentialing, come back B7.
Growing groups hit it most: new hires start seeing patients before payer enrollment is effective, and new sites open before they're added to contracts.
Common causes
- Services before the enrollment effective date
- Revalidation or recredentialing lapsed
- New site not yet added to the payer contract
- Service outside the provider's certified scope with the payer
Correct and resubmit, or appeal?
Check the enrollment effective date. Some payers allow a retroactive effective date or back-billing window; if so, rebill once it's granted. Appeal with evidence if the payer's record is wrong.
What to do
Confirm the effective date and any lapse with the payer.
Ask whether retroactive enrollment is allowed, and within what window.
Hold claims for new clinicians and sites until enrollment is effective, using a tracked go-live date.
Often seen with
- N95
- N290
Got a CO-B7 on your desk?
Send us the facts on that one denial — codes, payer, level of care, and dollar amount, no patient information — and within 2 business days we’ll tell you whether to correct or appeal, the deadline to watch, and what evidence would answer it. Free.