J9100 HCPCS code: Injection, cytarabine, 100 mg
J9100 is the HCPCS Level II code for injection, cytarabine, 100 mg. In 2024 Medicare paid an average of $0.64 per service for J9100 across 8,189 services. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 60 per day on DME suppliers. In 2024, about 275 clinicians billed Medicare for J9100 for 129 beneficiaries.
Code details
| Field | Value |
|---|---|
| Section | J codes — Drugs administered other than oral method |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 51 — Drug or biological (priced per ASP/average sales price rules) |
| BETOS category | O1D — Chemotherapy |
| Added | 1986-01-01 |
| Last action effective | 2009-01-01 |
Who bills J9100 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 275 |
| Medicare beneficiaries | 129 |
| States with claims | 3 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for J9100, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 8,127 | 147 | $0.95 | $0.75 |
| 2023 | 7,592 | 111 | $0.90 | $0.72 |
| 2024 | 8,189 | 129 | $0.81 | $0.64 |
States with the most J9100 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 983 | $0.67 |
| Texas | 860 | $0.68 |
| Ohio | 40 | $0.01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 60 | Clinical: Data |
| outpatient hospital claims | 120 | Clinical: Society Comment |
| practitioner claims | 120 | Clinical: Society Comment |
What changed for J9100
- 1986-01-01: J9100 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 J9100?
J9100 is the HCPCS Level II code for injection, cytarabine, 100 mg. Short descriptor: "Cytarabine hcl 100 mg inj".
How much does Medicare pay for J9100?
In 2024, the average Medicare payment was $0.64 per service (average allowed $0.81).
Does Medicare cover J9100?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of J9100 can be billed per day?
60 on DME suppliers; 120 on outpatient hospital claims; 120 on practitioner claims (NCCI medically unlikely edits).
Related J91 codes
- J9118 — Injection, calaspargase pegol-mknl, 10 units
- J9119 — Injection, cemiplimab-rwlc, 1 mg
- J9120 — Injection, dactinomycin, 0.5 mg
- J9130 — Dacarbazine, 100 mg
- J9144 — Injection, daratumumab, 10 mg and hyaluronidase-fihj
- J9145 — Injection, daratumumab, 10 mg
- J9150 — Injection, daunorubicin, 10 mg
- J9151 — Injection, daunorubicin citrate, liposomal formulation, 10 mg
- J9153 — Injection, liposomal, 1 mg daunorubicin and 2.27 mg cytarabine
- J9155 — Injection, degarelix, 1 mg
- J9160 — Injection, denileukin diftitox, 300 micrograms
- J9161 — Injection, denileukin diftitox-cxdl, 1 mcg
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under J9100
- Watch J9100 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J9100
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.