How many J9120 billing units are in a package of Dactinomycin?

CMS lists 1 billing units per package, depending on the NDC, where one unit is 0.5 mg. Units to report are based on the dose given, not the package.

No. J9120 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.

Dactinomycin J-Code J9120 — Billing Units & NDCs

In short

Dactinomycin is billed under HCPCS J9120 — Injection, dactinomycin, 0.5 mg. One billing unit is 0.5 mg. CMS's crosswalk lists 7 Dactinomycin NDCs under this code.

J9120 code details

Reference

J9120: Injection, dactinomycin, 0.5 mgBilling unit: 0.5 mg
Labelers: Eugia US LLC; Hisun Pharmaceuticals USA, Inc; Meitheal Pharmaceuticals Inc.; Mylan Institutional Inc.; XGen Pharmaceuticals DJB, Inc.

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$320.899

Per0.5 mg

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

Dactinomycin units and claim line

Enter the dose given to get the J9120 units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 0.5 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Dactinomycin 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.

Dactinomycin NDCs in the CMS ASP crosswalk
NDC (11-digit)	HCPCS	Labeler	Package	Billing units per package
39822-2100-02	J9120	XGen Pharmaceuticals DJB, Inc.	1	1
42658-0008-01	J9120	Hisun Pharmaceuticals USA, Inc	1	1
55150-0431-01	J9120	Eugia US LLC	1	1
55150-0928-02	J9120	Eugia US LLC	1	1
67457-0513-05	J9120	Mylan Institutional Inc.	1	1
67457-0928-02	J9120	Mylan Institutional Inc.	1	1
71288-0129-02	J9120	Meitheal Pharmaceuticals Inc.	1	1

Dactinomycin: common questions

What is the J-code for Dactinomycin?: Dactinomycin is billed under HCPCS J9120 — Injection, dactinomycin, 0.5 mg. One billing unit is 0.5 mg. CMS's crosswalk lists 7 Dactinomycin NDCs under this code.
How many J9120 billing units are in a package of Dactinomycin?: CMS lists 1 billing units per package, depending on the NDC, where one unit is 0.5 mg. Units to report are based on the dose given, not the package.
Is J9120 a CPT code?: No. J9120 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.

Dactinomycin J-Code / HCPCS Code