No. J0740 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 J0740?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J0740, for Cidofovir. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J0740?

$522.238 per 375 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 J0740?

One unit of J0740 is 375 mg, as stated in the code's descriptor. Units to report = dose given ÷ 375 mg.

J0740 J-Code: Cidofovir — Billing Units & NDCs

In short

J0740 is the HCPCS Level II code for injection, cidofovir, 375 mg. CMS assigns NDCs for Cidofovir to it. One billing unit is 375 mg. The Medicare Part B payment limit is $522.238 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ0740

Billing unit375 mg

Descriptor: Injection, cidofovir, 375 mg
Short descriptor: Cidofovir injection
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 1998

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$522.238

Per375 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 ÷ 375 mg. For example, 37500 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 = 375 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

NDCs billed under J0740

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 2 NDCs to J0740 for Cidofovir. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J0740 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Cidofovir	23155-0216-31	Heritage Pharmaceuticals Inc.	5	1
Cidofovir	67457-0210-05	Mylan Institutional LLC	5	1

J0740: common questions

Is J0740 a CPT code?: No. J0740 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 J0740?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J0740, for Cidofovir. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J0740?: $522.238 per 375 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 J0740?: One unit of J0740 is 375 mg, as stated in the code's descriptor. Units to report = dose given ÷ 375 mg. J-code billing units.

J0740 — Injection, cidofovir, 375 mg