In short

Cidofovir is billed under HCPCS J0740 — Injection, cidofovir, 375 mg. One billing unit is 375 mg. CMS's crosswalk lists 2 Cidofovir NDCs under this code.

J0740 code details

Reference

J0740
Injection, cidofovir, 375 mgBilling unit: 375 mg
Labelers
Heritage Pharmaceuticals Inc.; Mylan Institutional LLC

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

Cidofovir units and claim line

Enter the dose given to get the J0740 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Cidofovir 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.

Cidofovir NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
23155-0216-31J0740Heritage Pharmaceuticals Inc.51
67457-0210-05J0740Mylan Institutional LLC51

Cidofovir: common questions

What is the J-code for Cidofovir?
Cidofovir is billed under HCPCS J0740 — Injection, cidofovir, 375 mg. One billing unit is 375 mg. CMS's crosswalk lists 2 Cidofovir NDCs under this code.
How many J0740 billing units are in a package of Cidofovir?
CMS lists 1 billing units per package, depending on the NDC, where one unit is 375 mg. Units to report are based on the dose given, not the package.
Is J0740 a CPT code?
No. J0740 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.

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