HCPCS drug code · CMS crosswalk
Leukine J-Code / HCPCS Code
In short
Leukine is billed under HCPCS J2820 — Injection, sargramostim (gm-csf), 50 mcg. One billing unit is 50 mcg. CMS's crosswalk lists 1 Leukine NDC under this code.
Reference
- J2820
- Injection, sargramostim (gm-csf), 50 mcgBilling unit: 50 mcg
- Labelers
- Partner Therapeutics, Inc
Medicare Part B payment limit
CMS ASP filePayment limit per unit$62.47
Per50 mcg
Coinsurance20%
Effective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files
Leukine units and claim line
Enter the dose given to get the J2820 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Leukine NDCs and billing units
From CMS’s ASP NDC–HCPCS crosswalk, effective October 1, 2026 through December 31, 2026. Billing units per package are CMS’s figures for the code’s unit.
| NDC (11-digit) | HCPCS | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| 71837-5843-05 | J2820 | Partner Therapeutics, Inc | 5 × 1 | 25 |
Leukine: common questions
- What is the J-code for Leukine?
- Leukine is billed under HCPCS J2820 — Injection, sargramostim (gm-csf), 50 mcg. One billing unit is 50 mcg. CMS's crosswalk lists 1 Leukine NDC under this code.
- How many J2820 billing units are in a package of Leukine?
- CMS lists 25 billing units per package, depending on the NDC, where one unit is 50 mcg. Units to report are based on the dose given, not the package.
- Is J2820 a CPT code?
- No. J2820 is a HCPCS Level II code from CMS for the drug itself. Giving it, for example by injection or infusion, is usually reported with a separate CPT administration code.