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N96 Remark Code: Must Be Refractory and a Surgical Candidate

N96 means the payer requires the patient to be refractory to conventional therapy (documented behavioral, drug, or surgical treatment that failed) and to be an appropriate surgical candidate for implantation under anesthesia. The claim was denied because those criteria were not shown.

Quick facts

Code
N96 (RARC N96)
Status
Active In use since August 24, 2001.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): A medical necessity denial. Without a valid advance notice, the provider generally cannot bill the patient.
  • PR (Patient Responsibility): Patient liability may apply if the patient signed a valid advance notice of non-coverage before the procedure.
Official description
Patient must be refractory to conventional therapy (documented behavioral, pharmacologic and/or surgical corrective therapy) and be an appropriate surgical candidate such that implantation with anesthesia can occur.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N96 means

N96 reflects two coverage conditions that must both be documented before an implanted stimulator is paid. First, the patient must be refractory: conventional treatment was tried and did not work. That includes behavioral approaches, medication, and surgical correction where appropriate. Second, the patient must be fit to have the device implanted, including tolerating anesthesia.

The remark usually explains a medical necessity denial such as CARC 50. The payer is not saying the procedure was performed badly; it is saying the record it reviewed did not establish eligibility.

Common causes

  • The chart lists a diagnosis but not the specific conservative treatments that failed.
  • Medication trials are mentioned without names, durations, or outcomes.
  • The pre-operative assessment that clears the patient for anesthesia and implantation was missing from records sent for review.
  • The claim was billed before records were requested, and the payer denied on the claim data alone.

How to fix it

  1. Gather the treatment history: each conservative therapy, dates, and the documented result.
  2. Add the surgical clearance or pre-operative evaluation showing the patient was an appropriate candidate.
  3. Review the payer’s coverage policy for the device to confirm the full list of criteria, since other criteria (test stimulation, diary capability, excluded conditions) are often checked together.
  4. File an appeal with a short cover letter that maps each criterion to the page in the record that supports it.
  5. If the criteria were truly not met, check whether an advance notice was signed before deciding who is liable.

How to prevent it

Use a pre-procedure checklist built from the payer’s policy and confirm prior authorization where the plan requires it; the authorization denials guide covers that workflow. Collect the documentation before scheduling the permanent implant, not after a denial.

Codes that may appear with N96

  • CO-50 (These are non-covered services because this is not deemed a 'medical necessity' by the payer.): Not medically necessary; N96 identifies the unmet criteria as refractory status and surgical candidacy.
  • CO-272 (Coverage/program guidelines were not met.): Coverage or program guidelines were not met.
  • N97 (Patients with stress incontinence, urinary obstruction, and specific neurologic diseases (e.g., diabetes with peripheral nerve involvement) which…): Lists the conditions excluded from coverage for the same kind of implant.
  • N98 (Patient must have had a successful test stimulation in order to support subsequent implantation.): Requires a successful test stimulation before permanent implantation.
  • N99 (Patient must be able to demonstrate adequate ability to record voiding diary data such that clinical results of the implant procedure can be…): Requires the patient to be able to keep a voiding diary.
  • N386 (This decision was based on a National Coverage Determination (NCD).): Signals that a National Coverage Determination was the basis of the decision.

N96 FAQ

What service does N96 usually relate to?

It is written around implanted stimulation devices for urinary control, such as sacral nerve stimulation, where Medicare coverage policy requires failed conventional therapy first.

What documentation shows the patient is refractory?

Notes describing each conventional treatment tried, such as behavioral programs, medications, or prior procedures, how long it was used, and why it failed or was not tolerated.

Can I appeal N96?

Yes, if the records meet the criteria but were not submitted or were overlooked. Send the treatment history and the pre-operative evaluation supporting surgical candidacy.