Skip to main content

N786 Remark Code: Orthodontic Benefit Limitation

N786 means the payer applied a benefit limitation for the active and/or retention phase of orthodontic treatment. The plan's orthodontic maximum, frequency, or phase limit reduced or denied payment for this service.

Quick facts

Code
N786 (RARC N786)
Status
Active In use since November 1, 2016.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • PR (Patient Responsibility): Amounts beyond the orthodontic benefit are typically the patient's responsibility under the plan.
  • CO (Contractual Obligation): In some network arrangements, part of the amount must be written off. Check your agreement with the dental plan.
Official description
Benefit limitation for the orthodontic active and/or retention phase of treatment.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N786 means

Orthodontic benefits usually work differently from other dental benefits. Plans commonly set a lifetime orthodontic maximum, pay it out over the course of treatment, and may define the active phase and the retention phase separately. N786 tells you one of those limits affected this claim.

It usually appears with CARC 119, CARC 149, or CARC 35, often under group PR. It is a benefit outcome, not a coding problem.

Common causes

  • The patient’s lifetime orthodontic maximum was used up, possibly by earlier treatment with another provider.
  • Retention-phase services were billed, but the plan does not cover retention or limits it.
  • Treatment extended beyond the period the plan pays over.
  • The patient’s orthodontic coverage has age limits or waiting periods.

What to do

  1. Check the patient’s orthodontic benefit: lifetime maximum, amount used, payment schedule, and phase rules.
  2. Confirm the claim reported the correct phase and treatment dates.
  3. If the plan applied the limit incorrectly, for example counting another patient’s history, contact the plan with records.
  4. Otherwise, bill the patient for the remaining amount according to your treatment contract and plan agreement.

How to prevent surprises

Obtain an orthodontic benefit breakdown before treatment starts, including amounts already used, and build the payment schedule into the patient’s financial agreement. Recheck benefits if the patient changes plans mid-treatment.

Codes that may appear with N786

  • PR-119 (Benefit maximum for this time period or occurrence has been reached.): The benefit maximum for this time period or occurrence has been reached.
  • CO-149 (Lifetime benefit maximum has been reached for this service/benefit category.): The lifetime benefit maximum for this service or category has been reached, common with orthodontic maximums.
  • CO-35 (Lifetime benefit maximum has been reached.): The lifetime benefit maximum has been reached.
  • N130 (Consult plan benefit documents/guidelines for information about restrictions for this service.): Points to plan documents for restrictions on this service.
  • CO-273 (Coverage/program guidelines were exceeded.): Coverage or program guidelines were exceeded.
  • N785 (Missing current radiology film/images.): Current radiology images are missing, a documentation need often seen with orthodontic claims.

N786 FAQ

What are the active and retention phases?

The active phase is treatment that moves teeth, such as braces or aligners. The retention phase follows, using retainers to hold teeth in place. Plans may limit or define benefits separately for each.

How are orthodontic benefits usually paid?

Many dental plans pay orthodontics up to a lifetime maximum, often spread over the treatment period. Payment schedules and limits vary by plan.

Can the patient be billed after N786?

Usually yes for amounts beyond the benefit under PR, subject to your agreement with the plan and the treatment contract signed with the patient.