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N363 Remark Code: Upcoming Payer Policy Change

N363 is an informational alert. The payer is warning that new policies or procedures coming in the near future would affect decisions like this one, so future claims for the same service may be handled differently.

Quick facts

Code
N363 (RARC N363)
Status
Active In use since November 18, 2005; last modified April 1, 2007.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): This claim was processed under current rules. Any contractual adjustment shown follows your contract; the alert concerns future claims only.
Official description
Alert: in the near future we are implementing new policies/procedures that would affect this determination.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N363 means

Payers sometimes use the remittance to give advance warning. N363 says the service on this line is affected by a policy or procedure change the payer plans to put in place soon. This claim was processed under the current rules; later ones may not be.

It can appear on paid or adjusted lines. The CARC on the same line, such as a routine contractual adjustment, explains today’s result.

What to do

  1. No action on this claim is needed because of N363 itself.
  2. Find the upcoming policy. Search the payer’s provider bulletins and medical policy updates for the service billed.
  3. Assess the impact. Look for new authorization requirements, documentation rules, coding changes, or coverage limits.
  4. Update workflows before the effective date: scheduling scripts, authorization checks, templates, and charge rules.
  5. Tell the clinical team if documentation expectations are changing.

Tracking which services receive N363 helps you prioritize which payer updates to read closely. The ERA Analyzer can surface remark code trends like this across remittances.

Codes that may appear with N363

  • CO-45 (Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement.): May appear on a paid line with a routine fee schedule adjustment; the alert does not change the amount.
  • N59 (Alert: Please refer to your provider manual for additional program and provider information.): Directs you to the provider manual for program and provider information.
  • N130 (Consult plan benefit documents/guidelines for information about restrictions for this service.): Points to plan benefit documents for restrictions on the service.
  • N220 (Alert: See the payer's web site or contact the payer's Customer Service department to obtain forms and instructions for filing a provider dispute.): Directs you to the payer's website or customer service for forms and instructions.

N363 FAQ

Does N363 affect this claim's payment?

No. It is a heads-up about future processing. The accompanying CARC shows how this claim was handled.

How do I find out what's changing?

Check the payer's provider bulletins, newsletters, and policy update pages, or ask your provider representative which policy applies to this service.

Should I change how I bill right away?

Only once you know the new policy and its effective date. Until then, keep billing under the current rules.