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N595 Remark Code: No Assignment of Benefits on File

N595 means the insurer's records show the injured party did not complete an Assignment of Benefits (AOB) for this loss. Without it, the insurer may not pay the provider directly and may instead pay the injured person or hold payment.

Quick facts

Code
N595 (RARC N595)
Status
Active In use since July 15, 2013.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • OA (Other Adjustment): Payment to the provider is blocked until an assignment is on file. The charge itself is not being denied for coverage.
  • PR (Patient Responsibility): Some carriers show the amount as patient responsibility, for example when benefits are paid to the patient instead.
Official description
Records reflect the injured party did not complete an Assignment of Benefits for this loss.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N595 means

An Assignment of Benefits is the injured person’s signed permission for the insurer to pay the provider directly. N595 says the insurer does not have a completed assignment for this loss. That doesn’t necessarily mean the care isn’t covered; it means the insurer won’t send the money to you without it.

It is most common on auto no-fault and other injury claims. Look for CARC 227 or CARC 100 on the same remittance.

Common causes

  • The patient never signed an assignment, or signed only a general health insurance form.
  • The signed form was not sent to the insurer with the first bill.
  • The insurer requires its own form or specific wording.
  • The form was missing a signature, date, or claim number.

How to fix it

  1. Check your records for a signed assignment for this patient and accident.
  2. Ask the adjuster which form the insurer accepts.
  3. Get the patient’s signature on the required form if needed.
  4. Send it to the carrier and request that pending bills be processed for payment to you.
  5. If benefits were already paid to the patient, bill the patient according to your financial policy and state rules.

How to prevent it

Have every accident patient sign an assignment of benefits at the first visit, using the carrier’s form where required, and send a copy with the first bill. Store it where billing staff can find it quickly.

Codes that may appear with N595

  • CO-227 (Information requested from the patient/insured/responsible party was not provided or was insufficient/incomplete.): Information or documents required from the patient were not provided.
  • CO-100 (Payment made to patient/insured/responsible party.): Payment was made to the patient or insured instead of the provider.
  • CO-P21 (Payment denied based on the Medical Payments Coverage (MPC) and/or Personal Injury Protection (PIP)): Denied under PIP or medical payments rules.
  • N594 (Records reflect the injured party did not complete an Application for Benefits for this loss.): The injured party did not complete an Application for Benefits.
  • N596 (Records reflect the injured party did not complete a Medical Authorization for this loss.): The injured party did not complete a Medical Authorization.
  • CO-111 (Not covered unless the provider accepts assignment.): Not covered unless the provider accepts assignment.

N595 FAQ

Is our office's assignment form enough?

Sometimes. Some insurers accept a provider's signed assignment form, while others require their own or a state-specific form. Ask the carrier what it accepts.

What if the insurer already paid the patient?

Then you generally need to collect from the patient. Look for a remark or CARC 100 indicating payment to the insured.

Can I send the AOB after the claim?

Usually yes. Send the signed form to the adjuster and ask that your bills be reprocessed for payment to you.