No. J3373 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code.

What NDCs are billed under J3373?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 70 NDCs under J3373, for Vancomycin HCl. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J3373?

$0.032 per 10 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.

What is one billing unit of J3373?

One unit of J3373 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg.

J3373 J-Code: Vancomycin hydrochloride — Billing Units

In short

J3373 is the HCPCS Level II code for injection, vancomycin hydrochloride, 10 mg. CMS assigns NDCs for Vancomycin HCl to it. One billing unit is 10 mg. The Medicare Part B payment limit is $0.032 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ3373

Billing unit10 mg

Descriptor: Injection, vancomycin hydrochloride, 10 mg
Short descriptor: Inj, vancomycin hcl, 10 mg
Code set: HCPCS Level II, maintained by CMS
Effective: Jul 1, 2025

The billing unit is read from the descriptor. Confirm it against the CMS file before billing.

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$0.032

Per10 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

Units and claim line

Units = dose given ÷ 10 mg. For example, 1000 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 10 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

NDCs billed under J3373

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 70 NDCs to J3373 for Vancomycin HCl. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J3373 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Vancomycin HCl	00143-9355-10	Hikma Pharmaceuticals USA Inc.	10 × 1	750
Vancomycin HCl	00143-9357-10	Hikma Pharmaceuticals USA Inc.	10 × 1	1,000
Vancomycin HCl	00143-9358-01	Hikma Pharmaceuticals USA Inc.	1	500
Vancomycin HCl	00143-9359-01	Hikma Pharmaceuticals USA Inc.	1	1,000
Vancomycin HCl	00338-0122-04	Baxter Healthcare Corporation	4 × 250	500
Vancomycin HCl	00338-0124-04	Baxter Healthcare Corporation	4 × 300	600
Vancomycin HCl	00338-3551-48	Baxter Healthcare Corporation	100	600
Vancomycin HCl	00338-3552-48	Baxter Healthcare Corporation	200	600
Vancomycin HCl	00338-3580-48	Baxter Healthcare Corporation	150	450
Vancomycin HCl	00338-3581-01	Baxter Healthcare Corporation	100	600
Vancomycin HCl	00338-3582-01	Baxter Healthcare Corporation	150	450
Vancomycin HCl	00338-3583-01	Baxter Healthcare Corporation	200	600
Vancomycin HCl	00404-9965-99	Henry Schein Inc.	1	50
Vancomycin HCl	00409-1319-01	Pfizer Inc	1	1,000
Vancomycin HCl	00409-3515-01	Pfizer Inc	10 × 1	1,500
Vancomycin HCl	00409-4332-01	Pfizer Inc	10 × 1	500
Vancomycin HCl	00409-5017-01	Pfizer Inc	1	1,000
Vancomycin HCl	00409-6509-01	Pfizer Inc	1	500
Vancomycin HCl	00409-6509-49	Pfizer Inc	1	500
Vancomycin HCl	00409-6531-01	Pfizer Inc	10 × 1	750
Vancomycin HCl	00409-6531-02	Pfizer Inc	10 × 1	750
Vancomycin HCl	00409-6533-21	Pfizer Inc	10 × 1	1,000
Vancomycin HCl	00409-6533-31	Pfizer Inc	10 × 1	1,000
Vancomycin HCl	00409-6534-01	Pfizer Inc	10 × 1	500
Vancomycin HCl	00409-6535-01	Pfizer Inc	10 × 1	1,000
Vancomycin HCl	16714-0309-10	Northstar RxLLC	10 × 1	1,000
Vancomycin HCl	25021-0150-10	Sagent Pharmaceuticals	10 × 1	500
Vancomycin HCl	25021-0151-20	Sagent Pharmaceuticals	10 × 1	1,000
Vancomycin HCl	25021-0157-99	Sagent Pharmaceuticals	1	500
Vancomycin HCl	25021-0158-99	Sagent Pharmaceuticals	1	1,000
Vancomycin HCl	63323-0203-20	FreseniUS Kabi USA, LLC	10 × 1	750
Vancomycin HCl	63323-0203-26	FreseniUS Kabi USA, LLC	10 × 1	750
Vancomycin HCl	63323-0221-10	FreseniUS Kabi USA, LLC	25 × 1	1,250
Vancomycin HCl	63323-0221-16	FreseniUS Kabi USA, LLC	25 × 1	1,250
Vancomycin HCl	63323-0284-20	FreseniUS Kabi USA, LLC	10 × 1	1,000
Vancomycin HCl	63323-0284-26	FreseniUS Kabi USA, LLC	10 × 1	1,000
Vancomycin HCl	63323-0295-61	FreseniUS Kabi USA, LLC	1	500
Vancomycin HCl	63323-0295-66	FreseniUS Kabi USA, LLC	1	500
Vancomycin HCl	63323-0314-61	FreseniUS Kabi USA, LLC	1	1,000
Vancomycin HCl	63323-0314-66	FreseniUS Kabi USA, LLC	1	1,000
Vancomycin HCl	67457-0339-50	Mylan Institutional LLC	10 × 1	500
Vancomycin HCl	67457-0340-01	Mylan Institutional LLC	10 × 1	1,000
Vancomycin HCl	67457-0341-05	Mylan Institutional LLC	1	500
Vancomycin HCl	67457-0342-10	Mylan Institutional LLC	1	1,000
Vancomycin HCl	68001-0407-75	BluePoint Laboratories	1	1,000
Vancomycin HCl	68462-0955-51	Glenmark Pharmaceuticals Inc., USA	10 × 1	500
Vancomycin HCl	68462-0956-11	Glenmark Pharmaceuticals Inc., USA	10 × 1	1,000
Vancomycin HCl	70436-0020-82	Slate Run Pharmaceuticals	10 × 1	500
Vancomycin HCl	70436-0021-82	Slate Run Pharmaceuticals	10 × 1	1,000
Vancomycin HCl	70436-0022-82	Slate Run Pharmaceuticals	1	500
Vancomycin HCl	70436-0023-82	Slate Run Pharmaceuticals	1	1,000
Vancomycin HCl	70594-0045-02	Xellia Pharmaceuticals USA, LLC.	10 × 1	500
Vancomycin HCl	70594-0046-02	Xellia Pharmaceuticals USA, LLC.	10 × 1	1,000
Vancomycin HCl	70594-0047-01	Xellia Pharmaceuticals USA, LLC.	1	500
Vancomycin HCl	70594-0048-01	Xellia Pharmaceuticals USA, LLC.	1	1,000
Vancomycin HCl	70594-0122-02	Xellia Pharmaceuticals USA, LLC.	10 × 1	500
Vancomycin HCl	70594-0123-02	Xellia Pharmaceuticals USA, LLC.	10 × 1	1,000
Vancomycin HCl	70860-0104-10	Athenex Pharmaceutical Division, LLC	10 × 1	500
Vancomycin HCl	70860-0105-20	Athenex Pharmaceutical Division, LLC	10 × 1	1,000
Vancomycin HCl	71288-0022-11	Meitheal Pharmaceuticals Inc.	10 × 1	500

Showing 60 of 70. The full list is in the CMS crosswalk file.

J3373: common questions

Is J3373 a CPT code?: No. J3373 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code. CPT codes for drug administration.
What NDCs are billed under J3373?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 70 NDCs under J3373, for Vancomycin HCl. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J3373?: $0.032 per 10 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.
What is one billing unit of J3373?: One unit of J3373 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg. J-code billing units.

J3373 — Injection, vancomycin hydrochloride, 10 mg