How many J9185 billing units are in a package of Fludarabine Phosphate?

CMS lists 1 billing units per package, depending on the NDC, where one unit is 50 mg. Units to report are based on the dose given, not the package.

No. J9185 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.

Fludarabine Phosphate J-Code J9185 — Billing Units & NDCs

In short

Fludarabine Phosphate is billed under HCPCS J9185 — Injection, fludarabine phosphate, 50 mg. One billing unit is 50 mg. CMS's crosswalk lists 5 Fludarabine Phosphate NDCs under this code.

J9185 code details

Reference

J9185: Injection, fludarabine phosphate, 50 mgBilling unit: 50 mg
Labelers: Actavis Pharma, Inc.; Areva Pharmaceuticals; FreseniUS Kabi USA, LLC; Hikma Pharmaceuticals USA Inc.; Sagent Pharmaceuticals

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$177.924

Per50 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

Fludarabine Phosphate units and claim line

Enter the dose given to get the J9185 units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 50 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Fludarabine Phosphate 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.

Fludarabine Phosphate NDCs in the CMS ASP crosswalk
NDC (11-digit)	HCPCS	Labeler	Package	Billing units per package
24201-0237-01	J9185	Hikma Pharmaceuticals USA Inc.	1	1
25021-0242-02	J9185	Sagent Pharmaceuticals	2	1
45963-0609-55	J9185	Actavis Pharma, Inc.	1	1
59923-0604-02	J9185	Areva Pharmaceuticals	2	1
63323-0192-02	J9185	FreseniUS Kabi USA, LLC	1	1

Fludarabine Phosphate: common questions

What is the J-code for Fludarabine Phosphate?: Fludarabine Phosphate is billed under HCPCS J9185 — Injection, fludarabine phosphate, 50 mg. One billing unit is 50 mg. CMS's crosswalk lists 5 Fludarabine Phosphate NDCs under this code.
How many J9185 billing units are in a package of Fludarabine Phosphate?: CMS lists 1 billing units per package, depending on the NDC, where one unit is 50 mg. Units to report are based on the dose given, not the package.
Is J9185 a CPT code?: No. J9185 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.

Fludarabine Phosphate J-Code / HCPCS Code