Skip to main content

N808 Remark Code: Not Covered for Provider Type

N808 means the service is not covered when performed or billed by this provider type or specialty. The payer compared the service to the specialty or taxonomy it has on file for the provider and found that the combination isn't payable.

Quick facts

Code
N808 (RARC N808)
Status
Active In use since July 1, 2018.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The denial is a provider liability. Under CO, the amount generally isn't billable to the patient.
Official description
Not covered for this provider type / provider specialty.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N808 means

Payers classify providers by type and specialty, usually through the taxonomy code reported on claims and recorded at enrollment. Their coverage rules then say which specialties may be paid for which services. N808 means the payer checked the service against the provider classification it has on file and concluded the service isn’t covered for that type or specialty.

It is usually paired with CARC 8 (procedure inconsistent with provider type/taxonomy) or CARC 170 (denied when performed by this type of provider).

Common causes

  • Taxonomy on the claim doesn’t match enrollment. The claim reports a general taxonomy while the provider is enrolled under a specific one, or the other way round.
  • Enrollment lists the wrong specialty, so the payer’s file shows a type that can’t bill the service.
  • Scope-of-practice limits. The payer doesn’t cover the service for that licensed profession, for example certain services by non-physician practitioners.
  • Wrong rendering provider. The claim names a clinician other than the one who performed the service.

How to fix it

  1. Compare three things: the taxonomy on the claim, the specialty in the payer’s enrollment record, and the clinician’s actual license and credentials.
  2. If the claim was wrong, correct the rendering provider or taxonomy and send a corrected claim with resubmission code 7 in box 22.
  3. If the enrollment record is wrong, update it with the payer, then request reprocessing.
  4. If both are correct, the service isn’t covered for that specialty under this payer’s policy. Review the policy and appeal only if you can show it allows the service.

How to prevent it

  • Keep taxonomy codes identical across NPPES, payer enrollment, and your billing system.
  • Review payer scope rules before adding new services for non-physician clinicians.
  • See provider enrollment denials for how enrollment data flows into claim edits.

Codes that may appear with N808

  • CO-8 (The procedure code is inconsistent with the provider type/specialty (taxonomy).): The procedure code is inconsistent with the provider type or specialty (taxonomy).
  • CO-170 (Payment is denied when performed/billed by this type of provider.): Payment is denied when the service is performed or billed by this type of provider.
  • CO-185 (The rendering provider is not eligible to perform the service billed.): The rendering provider is not eligible to perform the service billed.
  • N95 (This provider type/provider specialty may not bill this service.): This provider type or specialty may not bill this service, a closely related wording.
  • N574 (Our records indicate the ordering/referring provider is of a type/specialty that cannot order or refer.): The ordering or referring provider is of a type that cannot order or refer.
  • N790 (Provider/supplier not accredited for product/service.): The supplier lacks accreditation for the item, rather than being the wrong type.

N808 FAQ

Can I fix N808 by changing the taxonomy code?

Only if the taxonomy on the claim or enrollment was wrong. Changing it to get paid when it doesn't describe the provider isn't appropriate.

Why does another payer pay the same service from the same provider?

Scope and specialty rules differ between payers, and state licensing and Medicaid rules differ further. Each payer applies its own list of which specialties may bill which services.

Can the service be billed under a different provider?

Only if that provider actually performed or supervised it under the payer's rules. Billing under another provider who didn't render the service is not appropriate.