No. J0132 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 J0132?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 11 NDCs under J0132, for Acetadote and Acetylcysteine. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J0132?

$0.499 per 100 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 J0132?

One unit of J0132 is 100 mg, as stated in the code's descriptor. Units to report = dose given ÷ 100 mg.

J0132 J-Code: Acetadote (acetylcysteine) — Billing Units

In short

J0132 is the HCPCS Level II code for injection, acetylcysteine, 100 mg. CMS assigns NDCs for Acetadote and Acetylcysteine to it. One billing unit is 100 mg. The Medicare Part B payment limit is $0.499 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ0132

Billing unit100 mg

Descriptor: Injection, acetylcysteine, 100 mg
Short descriptor: Acetylcysteine injection
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 2018

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$0.499

Per100 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 ÷ 100 mg. For example, 10000 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 = 100 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

NDCs billed under J0132

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 11 NDCs to J0132 for Acetadote and Acetylcysteine. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J0132 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Acetadote	66220-0207-30	Cumberland Pharmaceuticals Inc.	4 × 30	240
Acetylcysteine	00143-9433-04	Hikma Pharmaceuticals USA Inc.	4 × 30	240
Acetylcysteine	00574-0805-30	Padagis US LLC	4 × 30	240
Acetylcysteine	25021-0812-30	Sagent Pharmaceuticals	4 × 30	240
Acetylcysteine	25021-0812-66	Sagent Pharmaceuticals	4 × 30	240
Acetylcysteine	55150-0259-30	Eugia US LLC	4 × 30	240
Acetylcysteine	63323-0963-30	FreseniUS Kabi USA, LLC	4 × 30	240
Acetylcysteine	63323-0963-44	FreseniUS Kabi USA, LLC	4 × 30	240
Acetylcysteine	68462-0946-12	Glenmark Pharmaceuticals Inc., USA	4 × 30	240
Acetylcysteine	70069-0788-04	Somerset Pharma, LLC	4 × 30	240
Acetylcysteine	70594-0111-02	Xellia Pharmaceuticals USA, LLC.	4 × 30	240

J0132: common questions

Is J0132 a CPT code?: No. J0132 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 J0132?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 11 NDCs under J0132, for Acetadote and Acetylcysteine. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J0132?: $0.499 per 100 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 J0132?: One unit of J0132 is 100 mg, as stated in the code's descriptor. Units to report = dose given ÷ 100 mg. J-code billing units.

J0132 — Injection, acetylcysteine, 100 mg