J1833 HCPCS code: Injection, isavuconazonium, 1 mg
J1833 is the HCPCS Level II code for injection, isavuconazonium, 1 mg. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 1116 per day on outpatient hospital claims.
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 | 2016-01-01 |
| Last action effective | 2016-01-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1116 | Prescribing Information |
| practitioner claims | 372 | Prescribing Information |
What changed for J1833
- 2016-01-01: J1833 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 J1833?
J1833 is the HCPCS Level II code for injection, isavuconazonium, 1 mg. Short descriptor: "Injection, isavuconazonium".
Does Medicare cover J1833?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
How many units of J1833 can be billed per day?
1116 on outpatient hospital claims; 372 on practitioner claims (NCCI medically unlikely edits).
Related J18 codes
- J1800 — Injection, propranolol hcl, up to 1 mg
- J1805 — Injection, esmolol hydrochloride, 10 mg
- J1806 — Injection, esmolol hydrochloride (wg critical care), not therapeutically equivalent to j1805, 10 mg
- J1807 — Injection, ethacrynate sodium, 1 mg
- J1808 — Injection, folic acid, 0.1 mg
- J1809 — Injection, fosdenopterin, 0.1 mg
- J1810 — Injection, droperidol and fentanyl citrate, up to 2 ml ampule
- J1811 — Insulin (fiasp) for administration through dme (i.e., insulin pump) per 50 units
- J1812 — Insulin (fiasp), per 5 units
- J1813 — Insulin (lyumjev) for administration through dme (i.e., insulin pump) per 50 units
- J1814 — Insulin (lyumjev), per 5 units
- J1815 — Injection, insulin, per 5 units
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Next steps
- Run a reimbursement report for a device billed under J1833
- Watch J1833 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J1833
Sources: CMS HCPCS Level II release October 2025; 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.