J1645 HCPCS code: Injection, dalteparin sodium, per 2500 iu
J1645 is the HCPCS Level II code for injection, dalteparin sodium, per 2500 iu. In 2024 Medicare paid an average of $14.04 per service for J1645 across 694 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 10 per day on outpatient hospital claims. Medicare volume fell 56% from 2022 to 2024 (1,590 to 694 services). In 2024, about 26 clinicians billed Medicare for J1645 for 20 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 | O1E — Other drugs |
| Added | 1997-01-01 |
| Last action effective | 2002-07-01 |
Who bills J1645 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 26 |
| Medicare beneficiaries | 20 |
| States with claims | 1 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for J1645, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 1,590 | 44 | $11.50 | $9.01 |
| 2023 | 1,180 | 28 | $14.62 | $12.47 |
| 2024 | 694 | 20 | $16.63 | $14.04 |
States with the most J1645 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Florida | 317 | $14.06 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 10 | Prescribing Information |
| practitioner claims | 10 | Prescribing Information |
What changed for J1645
- 1997-01-01: J1645 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 J1645?
J1645 is the HCPCS Level II code for injection, dalteparin sodium, per 2500 iu. Short descriptor: "Dalteparin sodium".
How much does Medicare pay for J1645?
In 2024, the average Medicare payment was $14.04 per service (average allowed $16.63).
Does Medicare cover J1645?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of J1645 can be billed per day?
10 on outpatient hospital claims; 10 on practitioner claims (NCCI medically unlikely edits).
Related J16 codes
- J1600 — Injection, gold sodium thiomalate, up to 50 mg
- J1602 — Injection, golimumab, 1 mg, for intravenous use
- J1610 — Injection, glucagon hydrochloride, per 1 mg
- J1611 — Injection, glucagon hydrochloride (fresenius kabi), not therapeutically equivalent to j1610, per 1 mg
- J1612 — Injection, glucagon (gvoke), 0.01 mg
- J1620 — Injection, gonadorelin hydrochloride, per 100 mcg
- J1626 — Injection, granisetron hydrochloride, 100 mcg
- J1627 — Injection, granisetron, extended-release, 0.1 mg
- J1628 — Injection, guselkumab, 1 mg
- J1630 — Injection, haloperidol, up to 5 mg
- J1631 — Injection, haloperidol decanoate, per 50 mg
- J1632 — Injection, brexanolone, 1 mg
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Next steps
- Run a reimbursement report for a device billed under J1645
- Watch J1645 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J1645
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.