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N575 Remark Code: Ordering Provider Name Mismatch

N575 means the ordering or referring provider name you submitted does not match the name the payer has stored for that provider. Verify the exact name registered with the payer, correct the claim, and refile.

Quick facts

Code
N575 (RARC N575)
Status
Active In use since July 15, 2013.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The claim was denied for a provider data mismatch the billing provider must fix. Not billable to the patient.
Official description
Mismatch between the submitted ordering/referring provider name and the ordering/referring provider name stored in our records.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N575 means

When a service requires an order or referral, the payer checks the ordering or referring provider against its own records. N575 is specific: it says the name on the claim does not match the name stored for that provider. The identifier may be fine; the text is what failed.

It usually appears with CARC 16, or with CARC 183 or 184 when the payer could not confirm the provider’s eligibility because of the mismatch.

Common causes

  • Nicknames or informal names, such as “Bob” instead of “Robert.”
  • Married, maiden, or hyphenated surnames that differ from enrollment.
  • First and last name fields reversed or suffixes like Jr. placed in the wrong field.
  • Free-text entry from a faxed order, with a typo.
  • A practice or group name in box 17 instead of the individual practitioner.

How to fix it

  1. Look up the provider’s NPI in the NPPES registry and note the exact name.
  2. Confirm with the payer if possible, since enrollment records sometimes differ from NPPES.
  3. Correct box 17 (name) and confirm box 17b (NPI), then submit a corrected claim with resubmission code 7 in box 22 and the original claim number.
  4. If the payer’s record is wrong, ask the ordering provider to update their enrollment.

How to prevent it

Maintain a master list of frequent ordering and referring providers with names exactly as enrolled, and select from it instead of typing names. Claims Validator can check provider fields before submission. For related issues, see missing or invalid information denials.

Codes that may appear with N575

  • CO-16 (Claim/service lacks information or has submission/billing error(s).): The claim has a submission error; N575 identifies the ordering or referring provider name.
  • CO-183 (The referring provider is not eligible to refer the service billed.): The referring provider could not be validated as eligible.
  • CO-184 (The prescribing/ordering provider is not eligible to prescribe/order the service billed.): The ordering provider could not be validated as eligible.
  • 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.
  • N264 (Missing/incomplete/invalid ordering provider name.): The ordering provider's name is missing or invalid.
  • N285 (Missing/incomplete/invalid referring provider name.): The referring provider's name is missing or invalid.
  • N544 (Alert: Although this was paid, you have billed with a referring/ordering provider that does not match our system record.): Alert version: paid this time, but the referring or ordering provider does not match payer records.

N575 FAQ

How close does the name need to be?

Many payers compare the name to their enrollment records exactly or nearly so. Suffixes, hyphenated surnames, and nicknames are common causes of mismatches.

Which name should I use?

The legal name the provider used to enroll with the payer, which is usually the name associated with their NPI. Check the NPPES registry or ask the provider.

What if the NPI is right but the name differs?

Payers often match on both. A correct NPI does not prevent N575 if the name does not match the record tied to that NPI.