Official X12 description
“This is the 11th rental month. You must offer the patient the option of changing the rental to a purchase agreement.”
Source: X12 Remittance Advice Remark Codes. X12 publishes and maintains the RARC set; always verify against the current release before building a claim workflow.
Paired CARC codes
RARC M36 almost never appears alone — it accompanies one of the CARCs below on the same 835 remittance line. Fix the CARC and the RARC typically clears; the RARC alone is informational.
| Paired CARC | What the CARC means |
|---|---|
| CARC 108 | Rent/purchase guidelines were not met. |
What RARC M36 actually means
RARC M36 is a capped-rental month-11 reminder. Action required with patient.
Common root causes
- Rental reached month 11 under CMS capped-rental rule.
Prevention checklist
- Capped-rental month tracking.
Resolution & appeal strategy — step by step
Because RARC M36 is supplemental to a CARC, the resolution path usually starts by fixing the underlying adjustment reason. A formal appeal of the RARC alone is rarely necessary.
- 1Not applicable — action with patient.
Sample reconsideration language referencing RARC M36
Edit the bracketed fields before sending. Payer-specific reconsideration forms are often required — check the provider portal first.
How common is RARC M36?
Platform frequency ranks publish once the anonymized denial-rate pipeline reaches the publication threshold (strategy §12 Phase 2).
How QuickRCM handles RARC M36
QuickRCM reads RARC M36 alongside its paired CARC in the 835 LQ segment and routes the line to the correct worker queue with the right documentation already attached:
- Denial routing rules tuned to the CARC+RARC pair — the paired combination tells QuickRCM which documentation the payer will accept.
- Reconsideration template for this exact remark code pulls the supporting facts from the claim automatically.
- Pre-submission scrubs that catch the preventable drivers surfaced on this page before the 837 leaves the clearinghouse.
Frequently asked questions — RARC M36
What does RARC M36 mean?
RARC M36 is an X12 Remittance Advice Remark Code. The official X12 definition is: "This is the 11th rental month. You must offer the patient the option of changing the rental to a purchase agreement." It is supplemental to a Claim Adjustment Reason Code (CARC) on the same 835 line.
Which CARC is paired with RARC M36?
RARC M36 is most commonly paired with CARC 108. The CARC is the financial adjustment reason; the RARC is the informational remark. Fix the paired CARC first — the RARC usually clears with the corrected claim.
How do I resolve a RARC M36 remark on a remit?
Start from the root cause: Rental reached month 11 under CMS capped-rental rule. First step: Not applicable — action with patient. Because RARCs are supplemental, the resolution is almost always to address the paired CARC rather than appeal the RARC alone.
Where does RARC M36 appear on the 835 ERA?
RARC M36 is carried on the 835 Loop 2110 LQ segment alongside the CARC in the CAS segment of the same service line. The code and its X12 description also print on the paper EOB in the "Remark Code" or "Remark" column next to the corresponding denial or adjustment reason.
Is RARC M36 the same as ICD-10 code M36?
No. RARC M36 is a remittance-advice remark code published by X12 and carried on the 835. Any ICD-10 code with the same letters and digits is a diagnosis code on the 837 HI segment — a completely different code set maintained by the WHO/CMS. Use the transaction context (835 = RARC; 837 = ICD-10) to disambiguate.
Disclaimer
This page is operational reference for medical-billing professionals. It is not legal, clinical, or contractual advice. X12 code descriptors are maintained by the X12 External Code Lists; always verify against the current X12 release and the payer's own published policy before submitting or appealing a claim.