In short

Thymoglobulin is billed under HCPCS J7511 — Lymphocyte immune globulin, antithymocyte globulin, rabbit, parenteral, 25 mg. One billing unit is 25 mg. CMS's crosswalk lists 1 Thymoglobulin NDC under this code.

J7511 code details

Reference

J7511
Lymphocyte immune globulin, antithymocyte globulin, rabbit, parenteral, 25 mgBilling unit: 25 mg
Labelers
Genzyme Corporation

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$1,065.837
Per25 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

Thymoglobulin units and claim line

Enter the dose given to get the J7511 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Thymoglobulin 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.

Thymoglobulin NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
58468-0080-01J7511Genzyme Corporation11

Thymoglobulin: common questions

What is the J-code for Thymoglobulin?
Thymoglobulin is billed under HCPCS J7511 — Lymphocyte immune globulin, antithymocyte globulin, rabbit, parenteral, 25 mg. One billing unit is 25 mg. CMS's crosswalk lists 1 Thymoglobulin NDC under this code.
How many J7511 billing units are in a package of Thymoglobulin?
CMS lists 1 billing units per package, depending on the NDC, where one unit is 25 mg. Units to report are based on the dose given, not the package.
Is J7511 a CPT code?
No. J7511 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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