J3391 HCPCS code: Injection, atidarsagene autotemcel, per treatment
J3391 is the HCPCS Level II code for injection, atidarsagene autotemcel, per treatment. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 1 per day on DME suppliers.
Code details
| Field | Value |
|---|---|
| Section | J codes — Drugs administered other than oral method |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 51 — Drug or biological (priced per ASP/average sales price rules) |
| BETOS category | O1E — Other drugs |
| Added | 2025-07-01 |
| Last action effective | 2025-07-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 1 | Code Descriptor / CPT Instruction |
| outpatient hospital claims | 1 | Code Descriptor / CPT Instruction |
| practitioner claims | 1 | Code Descriptor / CPT Instruction |
What changed for J3391
- July 2025: Code appears in this HCPCS release
- 2025-07-01: J3391 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code J3391?
J3391 is the HCPCS Level II code for injection, atidarsagene autotemcel, per treatment. Short descriptor: "Inj, atidarsagene autotemcel".
Does Medicare cover J3391?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
How many units of J3391 can be billed per day?
1 on DME suppliers; 1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related J33 codes
- J3300 — Injection, triamcinolone acetonide (triesence), preservative free, 1 mg
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg
- J3302 — Injection, triamcinolone diacetate, per 5 mg
- J3303 — Injection, triamcinolone hexacetonide, per 5 mg
- J3304 — Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg
- J3305 — Injection, trimetrexate glucuronate, per 25 mg
- J3310 — Injection, perphenazine, up to 5 mg
- J3315 — Injection, triptorelin pamoate, 3.75 mg
- J3316 — Injection, triptorelin, extended-release, 3.75 mg
- J3320 — Injection, spectinomycin dihydrochloride, up to 2 gm
- J3350 — Injection, urea, up to 40 gm
- J3355 — Injection, urofollitropin, 75 iu
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Next steps
- Run a reimbursement report for a device billed under J3391
- Watch J3391 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J3391
Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.