B7 — Provider Not Certified/Eligible (Enrollment)
The payer's enrollment records show this provider was not enrolled, not credentialed with this specific plan, or not eligible to bill this specific service/specialty combination as of the date of service.
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In plain language
The payer's enrollment records show this provider was not enrolled, not credentialed with this specific plan, or not eligible to bill this specific service/specialty combination as of the date of service.
Start here
Verify the provider's enrollment/credentialing status with the specific payer for the date of service.
Who resolves it
Credentialing/Provider Enrollment, Billing
Who prevents it
Credentialing/Provider Enrollment — proactive roster reconciliation against payer enrollment status before providers begin seeing patients under a given plan.
Sources
- X12 CARC list; X12 RARC list
Validated ClaimetryX Source — Denial Management Knowledge Base, 2026 Research Edition
Research date August 18, 2026. CARC/RARC combinations and payer processes vary. Always check the specific remittance advice and the payer's current requirements before acting on any denial.
Published by ClaimetryX. Sources identify the code standards, agency guidance, and payer policies supporting this reference. How we use sources
How to resolve this denial, step by step
- 1
Verify the provider's enrollment/credentialing status with the specific payer for the date of service.
- 2
Compare the taxonomy/specialty submitted on the claim to what is on file with the payer.
- 3
If only the claim's taxonomy field was wrong, correct and resubmit.
- 4
If enrollment truly lapsed or was never completed, route to Provider Enrollment/Credentialing to resolve enrollment; do not bill under a different, uninvolved provider.
- 5
Document the enrollment verification outcome.
- 6
Escalate to Credentialing/Contracting leadership for retroactive enrollment or effective- date disputes.
Then choose the correct disposition
Corrected claim
only for a taxonomy/specialty data error on an already-enrolled provider.
Provider enrollment correction
the primary path when enrollment itself lapsed or was incomplete.
Formal appeal
rarely successful against a correctly applied enrollment edit; only relevant if the payer's enrollment records are demonstrably wrong.
Stop and escalate when
- Provider is not enrolled and the service already occurred (compliance and revenue-at-risk issue); enrollment effective-date dispute with the payer; recurring enrollment gaps for new hires.
What Needs to Be Corrected
- Claim correction: If the provider is properly enrolled and only the taxonomy or specialty field was wrong on the claim, correct and resubmit.
- Upstream correction: If the provider genuinely is not enrolled/credentialed with that payer, this is a Credentialing/Provider Enrollment issue — the claim cannot be fixed by changing the provider listed on it.
Do Not Do This
- Do not change the rendering or billing provider on the claim to a different, enrolled provider merely to make the claim payable if that provider did not actually perform or supervise the service.
- Do not backdate an enrollment application or attestation.
Plain-Language Meaning
- The payer's enrollment records show this provider was not enrolled, not credentialed with this specific plan, or not eligible to bill this specific service/specialty combination as of the date of service.
Why the Claim Was Denied
- Provider credentialing/enrollment: provider's Medicare/Medicaid/commercial enrollment lapsed, was pending, or never included the billed taxonomy/specialty
- Claim construction: correct provider is enrolled, but the wrong taxonomy code or specialty was submitted on the claim
- Payer processing: enrollment is active but the payer's provider file has not been updated
Information the Biller Must Review
- Billing/rendering provider NPI, taxonomy code submitted, provider's enrollment status and effective dates with the specific payer/plan, payer provider-directory/roster listing, credentialing file.
Sample Scenario
- Scenario: Claim denied B7/N95.
- Finding: Provider's enrollment application with this specific payer was still pending on the date of service.
- Action: Claim held pending enrollment approval; retroactive billing pursued per payer policy once enrollment is finalized (payer-specific whether retroactive billing is allowed).
Denial Identifier
- Primary CARC: B7 — "This provider was not certified/eligible to be paid for this procedure/service on this date of service." (X12)
- Related CARCs: 170 (payment denied when performed/billed by this type of provider), 171 (in this type of facility), 172 (adjusted when billed by a provider of this specialty), 8 (procedure inconsistent with provider type/specialty/taxonomy), B6 (payment adjusted when performed/billed by this type of provider/facility/specialty)
- Common RARC: N95 — "This provider type/provider specialty may not bill this service."
Prevention Control
- Provider enrollment roster reconciliation against active payer effective dates; pre-service check that a new provider's enrollment is active before scheduling patients under that plan; periodic re-credentialing tracking.
Department Most Likely Responsible
- Resolves current claim: Credentialing/Provider Enrollment, Billing. Prevents recurrence:
- Credentialing/Provider Enrollment — proactive roster reconciliation against payer enrollment status before providers begin seeing patients under a given plan.
AI Answer Guardrail
- Verify actual enrollment/credentialing status with the specific payer before recommending any claim correction, and never suggest substituting a different provider who did not render the service.
AI Search Terms / Synonyms
- B7; provider not certified; provider not eligible; not enrolled denial; credentialing denial; N95.
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