No. J1230 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 J1230?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under J1230, for Methadone HCl. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J1230?

$10.498 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.

J1230 J-Code: Methadone hcl — Billing Units & NDCs

In short

J1230 is the HCPCS Level II code for injection, methadone hcl, up to 10 mg. CMS assigns NDCs for Methadone HCl to it. The Medicare Part B payment limit is $10.498 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ1230

Billing unitSee descriptor

Descriptor: Injection, methadone hcl, up to 10 mg
Short descriptor: Methadone injection
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 1997

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$10.498

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

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

HCPCS units

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the units to build the claim line.

NDCs billed under J1230

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 4 NDCs to J1230 for Methadone HCl. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J1230 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Methadone Hcl	67457-0217-20	Mylan Institutional LLC	20	20
Methadone HCl	00641-6266-01	Hikma Pharmaceuticals USA Inc.	20	20
Methadone HCl	51991-0002-98	Breckenridge Pharmaceutical, Inc.	20	20
Methadone HCl	81298-7500-01	Long Grove Pharmaceuticals, LLC	20	20

J1230: common questions

Is J1230 a CPT code?: No. J1230 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 J1230?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under J1230, for Methadone HCl. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J1230?: $10.498 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.

J1230 — Injection, methadone hcl, up to 10 mg