RARC N372: Only Reasonable and Necessary Maintenance Charges Covered
The payer will only cover charges considered reasonable and necessary for maintenance — if the full amount is justified, submit supporting documentation such as maintenance records or a medical necessity letter.
What Does RARC N372 Mean?
RARC N372 indicates that the payer has limited payment to only those charges it deems reasonable and necessary for maintenance or ongoing servicing. This code appears most commonly on claims for durable medical equipment (DME) maintenance and repairs, ongoing therapy services, or continued care where the payer draws a line between essential maintenance and charges it considers excessive or beyond what is needed to keep the equipment functional or the patient's condition stable.
The "reasonable and necessary" standard is central to Medicare and many commercial payer policies. For DME, this means the payer will cover routine maintenance such as cleaning, testing, and replacing worn parts on equipment that the beneficiary owns, but may deny charges for upgrades, excessive service frequency, or repairs that approach the cost of replacement. For ongoing clinical services, it may mean the payer will cover maintenance therapy to prevent functional decline but not open-ended treatment aimed at further improvement when the patient has plateaued.
When N372 appears, some or all of the billed charges were reduced or denied because they exceeded the payer's threshold for what is essential. The payer is not saying the service was inappropriate — just that not all of the billed amount qualifies for reimbursement under its maintenance coverage policy.
What to Do
Review the payer's policy on maintenance services for the specific item or service category. For DME, check the payer's guidelines on maintenance frequency, covered repair types, and any cost thresholds that trigger replacement instead of repair. For clinical services, review the coverage criteria for maintenance therapy and confirm that the documentation supports an ongoing need.
If the charges are justified, compile supporting documentation — maintenance logs, service records, clinical notes showing functional decline risk, or a letter of medical necessity — and submit an appeal. Clearly explain why the full amount billed was reasonable and necessary for maintaining the equipment or the patient's condition. If the payer's reduction aligns with the policy and the charges were genuinely above the maintenance threshold, adjust the billing and write off the non-covered amount.
Common Scenarios
- A DME supplier bills for an annual overhaul of a power wheelchair including several replacement parts, but the payer covers only the routine service items and denies the upgraded components
- A home oxygen equipment maintenance claim is partially denied because the payer considers the service frequency excessive compared to manufacturer-recommended maintenance intervals
- A skilled maintenance therapy claim for a patient with a chronic neurological condition is reduced because the payer determines only a portion of the billed sessions meet the threshold for preventing functional decline
Commonly Paired With
No common pairings documented yet.