In short

Asceniv is billed under HCPCS J1554 — Injection, immune globulin (asceniv), 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 1 Asceniv NDC under this code.

J1554 code details

Reference

J1554
Injection, immune globulin (asceniv), 500 mgBilling unit: 500 mg
Labelers
ADMA Biologics, Inc

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$508.454
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

Asceniv units and claim line

Enter the dose given to get the J1554 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Asceniv 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.

Asceniv NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
69800-0250-01J1554ADMA Biologics, Inc5010

Asceniv: common questions

What is the J-code for Asceniv?
Asceniv is billed under HCPCS J1554 — Injection, immune globulin (asceniv), 500 mg. One billing unit is 500 mg. CMS's crosswalk lists 1 Asceniv NDC under this code.
How many J1554 billing units are in a package of Asceniv?
CMS lists 10 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 J1554 a CPT code?
No. J1554 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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