DENIAL CODE · CO-170

CO-170: Denied for This Provider Type

CO-170 means the payer won't pay this service when billed by your provider type or specialty. Some are genuine scope rules; others are wrong taxonomy or credentialing data.

Official (X12/WPC): "Payment is denied when performed/billed by this type of provider."
Written forBilling LeadPractice Manager

Why payers issue CO-170

  • The service isn't payable to your specialty/provider type under payer policy
  • The wrong taxonomy code was on the claim
  • The provider was credentialed under a different type than billed
  • Supervising/incident-to rules weren't reflected

Is it recoverable? Recoverable when the provider type or taxonomy was miscoded, or the service is in fact within your scope — correct the taxonomy or document the eligible provider.

How to appeal a Provider Not Eligible / Credentialing denial →

Common questions

What does CO-170 mean?

CO-170 means the payer won't pay this service when billed by your provider type or specialty. Some are genuine scope rules; others are wrong taxonomy or credentialing data. Payment is denied when performed/billed by this type of provider.

How do I appeal or fix a CO-170 denial?

Recoverable when the provider type or taxonomy was miscoded, or the service is in fact within your scope — correct the taxonomy or document the eligible provider. Common causes: the service isn't payable to your specialty/provider type under payer policy; the wrong taxonomy code was on the claim; the provider was credentialed under a different type than billed; supervising/incident-to rules weren't reflected.

Is a CO-170 denial worth appealing?

Recoverable when the provider type or taxonomy was miscoded, or the service is in fact within your scope — correct the taxonomy or document the eligible provider. You only pay on what's actually recovered, so there's no cost to working the ones that are winnable.

Other denial codes
CO-197 · Precertification / Authorization Absent →CO-50 · Not Medically Necessary →CO-16 · Missing or Invalid Information →CO-45 · Charge Exceeds Fee Schedule →CO-97 · Bundled into Another Service →CO-29 · Timely Filing Expired →CO-96 · Non-Covered Charge →OA-18 · Duplicate Claim →OA-22 · Coordination of Benefits →CO-11 · Diagnosis Inconsistent with Procedure →CO-151 · Too Many Services (Frequency/MUE) →CO-B7 · Provider Not Eligible →CO-27 · Coverage Terminated →CO-204 · Not Covered Under Current Plan →CO-109 · Not Covered by This Payer →CO-119 · Benefit Maximum Reached →CO-4 · Modifier Inconsistent or Missing →CO-15 · Authorization Number Missing or Invalid →OA-23 · Prior Payer Adjudication Impact →CO-24 · Charges Covered Under Capitation →CO-26 · Expenses Incurred Prior to Coverage →CO-54 · Assistant Surgeon Not Covered →CO-55 · Experimental / Investigational →CO-58 · Inappropriate Place of Service →CO-59 · Multiple/Concurrent Procedure Reduction →CO-107 · Related/Qualifying Claim Not Identified →CO-167 · Diagnosis Not Covered →CO-181 · Procedure Code Invalid on Date of Service →CO-182 · Procedure Modifier Invalid on Date of Service →CO-183 · Referring Provider Not Eligible to Refer →CO-185 · Rendering Provider Not Eligible →CO-198 · Precertification / Authorization Exceeded →CO-226 · Requested Provider Information Not Provided →CO-231 · Mutually Exclusive Procedures →CO-234 · Procedure Not Paid Separately →CO-236 · Procedure/Modifier Combination Not Compatible →CO-242 · Out-of-Network / Non-Network Provider →CO-252 · Documentation Required to Adjudicate →CO-253 · Sequestration Reduction →CO-256 · Not Payable Per Managed-Care Contract →CO-288 · Referral Absent →CO-B15 · Qualifying Service Not Received →CO-B16 · New Patient Qualifications Not Met →CO-A1 · Claim/Service Denied (Remark Required) →

Upload your remittance and see what's recoverable.

A free assessment reads your denials and underpayments and shows your real recoverable number. No risk, paid only on what we recover.

Unlock your revenue — free estimate →Book a 15-minute call →
Volari AI · all denial codes →