How many J1205 billing units are in a package of Chlorothiazide Sodium?

CMS lists 1 billing units per package, depending on the NDC, where one unit is 500 mg. Units to report are based on the dose given, not the package.

No. J1205 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.

Chlorothiazide Sodium J-Code J1205 — Billing Units & NDCs

In short

Chlorothiazide Sodium is billed under HCPCS J1205 — Injection, chlorothiazide sodium, per 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 7 Chlorothiazide Sodium NDCs under this code.

J1205 code details

Reference

J1205: Injection, chlorothiazide sodium, per 500 mgBilling unit: 500 mg
Labelers: American Regent, Inc.; FreseniUS Kabi USA, LLC; Sagent Pharmaceuticals; Sun Pharmaceutical Global FZE.

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$63.398

Per500 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

Chlorothiazide Sodium units and claim line

Enter the dose given to get the J1205 units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 500 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Chlorothiazide Sodium 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.

Chlorothiazide Sodium NDCs in the CMS ASP crosswalk
NDC (11-digit)	HCPCS	Labeler	Package	Billing units per package
00517-1820-01	J1205	American Regent, Inc.	1	1
25021-0305-20	J1205	Sagent Pharmaceuticals	1	1
25021-0305-66	J1205	Sagent Pharmaceuticals	1	1
47335-0330-40	J1205	Sun Pharmaceutical Global FZE.	1	1
63323-0658-20	J1205	FreseniUS Kabi USA, LLC	1	1
63323-0658-27	J1205	FreseniUS Kabi USA, LLC	1	1
63323-0658-94	J1205	FreseniUS Kabi USA, LLC	1	1

Chlorothiazide Sodium: common questions

What is the J-code for Chlorothiazide Sodium?: Chlorothiazide Sodium is billed under HCPCS J1205 — Injection, chlorothiazide sodium, per 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 7 Chlorothiazide Sodium NDCs under this code.
How many J1205 billing units are in a package of Chlorothiazide Sodium?: CMS lists 1 billing units per package, depending on the NDC, where one unit is 500 mg. Units to report are based on the dose given, not the package.
Is J1205 a CPT code?: No. J1205 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.

Chlorothiazide Sodium J-Code / HCPCS Code