What does denial code CO-B7 mean?

Provider not certified or eligible to be paid on this date of service. The provider was not enrolled or certified with the payer for this service on the date of service.

How do I fix a CO-B7 denial?

Check the provider's effective date with the payer. Hold claims until enrollment is effective; request a retroactive effective date if allowed.

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Claim adjustment reason code · Contractual obligation

CO-B7
Provider not certified or eligible to be paid on this date of service

What CO-B7 means

The provider was not enrolled or certified with the payer for this service on the date of service.

The CO group code means this amount is a contractual obligation: under most contracts you cannot bill it to the patient.

Common causes

Enrollment not yet effective
Credentialing lapsed

How to fix it

Check the provider's effective date with the payer
Hold claims until enrollment is effective; request a retroactive effective date if allowed

Check the remark code (RARC) that came with the denial and the payer's own policy, since rules vary by payer and plan. This is a plain-English summary written by GetMax; the official code text is published by X12 at x12.org/codes.

Prevent it next time

Most denials are caused before the claim is sent. See 12 ways to reduce claim denials, or let our denial management team work them for you.

Other codes

All denial codes →

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We triage every denial by code and payer, fix or appeal it, and stop it repeating.

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CO-B7Provider not certified or eligible to be paid on this date of service