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N362 Remark Code: Days or Units Exceed Payer Maximum

N362 means the number of days or units of service on the line exceeds the maximum the payer accepts for that service, so the excess was denied or the line was rejected.

Quick facts

Code
N362 (RARC N362)
Status
Active In use since November 18, 2005.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The excess units are a provider write-off under the payer's limits unless they were billed in error or can be supported on appeal.
Official description
The number of Days or Units of Service exceeds our acceptable maximum.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N362 means

Payers set upper limits on how many units or days of a service they will accept on one line, one date, or one claim. N362 says your units went over that ceiling. The limit could be clinical (a unit count that is implausible for one patient on one day), contractual, or tied to what was authorized.

The remark often accompanies CARC 151, 119, or 273, and CARC 198 when units exceeded an authorization.

Common causes

  • Units keyed wrong, such as milligrams entered as units for a drug billed per 10 mg.
  • Multiple days rolled into one line when the payer counts units per day.
  • Time-based services billed with more units than the documented time supports.
  • Authorized units used up before the end of the treatment period.
  • Legitimate high usage that exceeds a standard limit without the documentation or modifier the payer requires.

How to fix it

  1. Recalculate the units from the record using the code’s unit definition (per dose amount, per 15 minutes, per day).
  2. If the count was wrong, correct box 24G (or the 837P line units) and resubmit with frequency code 7.
  3. If the service spanned several days, split it into one line per date where the payer requires.
  4. If the higher count was medically necessary, appeal with documentation, and use any modifier the payer accepts for separate encounters.
  5. For authorization limits, request additional units from the payer before billing further services.

The MUE denials guide explains unit limits in more detail.

How to prevent it

Build unit conversion rules into drug and supply charge entry, and compare units against payer limits before release. Claims Validator can flag lines whose units exceed common limits so they are reviewed before submission.

Codes that may appear with N362

  • CO-151 (Payment adjusted because the payer deems the information submitted does not support this many/frequency of services.): The payer deems the information does not support this many services.
  • PR-119 (Benefit maximum for this time period or occurrence has been reached.): The benefit maximum for the period has been reached.
  • CO-273 (Coverage/program guidelines were exceeded.): Coverage or program guidelines were exceeded.
  • CO-198 (Precertification/notification/authorization/pre-treatment exceeded.): Authorization was exceeded, when the maximum comes from an approved unit count.
  • M53 (Missing/incomplete/invalid days or units of service.): Used when the days or units are missing or invalid rather than too high.
  • N345 (Date range not valid with units submitted.): Says the date range is not valid with the units submitted.
  • N430 (Procedure code is inconsistent with the units billed.): States the procedure code is inconsistent with the units billed.

N362 FAQ

Where does the maximum come from?

It may be a national unit limit, the payer's own policy, the plan's benefit, or an authorization. Ask the payer which one applied if it is not clear from the CARC.

Can I bill the extra units on a separate line?

Only if the payer's rules allow it, for example with a modifier showing separate sessions. Splitting lines just to avoid a limit can be treated as improper billing.

Can I bill the patient for the excess?

Usually not when the adjustment is under CO. Check your contract and any advance notice rules.