In short

Gammaked is billed under HCPCS J1561 — Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 3 Gammaked NDCs under this code.

J1561 code details

Reference

J1561
Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mgBilling unit: 500 mg
Labelers
Kedrion Biopharma Inc

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$48.022
Per500 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

Gammaked units and claim line

Enter the dose given to get the J1561 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Gammaked 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.

Gammaked NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
76125-0900-10J1561Kedrion Biopharma Inc10020
76125-0900-20J1561Kedrion Biopharma Inc20040
76125-0900-50J1561Kedrion Biopharma Inc5010

Gammaked: common questions

What is the J-code for Gammaked?
Gammaked is billed under HCPCS J1561 — Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 3 Gammaked NDCs under this code.
How many J1561 billing units are in a package of Gammaked?
CMS lists 10 to 40 billing units per package, depending on the NDC, where one unit is 500 mg. Units to report are based on the dose given, not the package.
Is J1561 a CPT code?
No. J1561 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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