In short

Alymsys is billed under HCPCS Q5126 — Injection, bevacizumab-maly, biosimilar, (alymsys), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 4 Alymsys NDCs under this code.

Q5126 code details

Reference

Q5126
Injection, bevacizumab-maly, biosimilar, (alymsys), 10 mgBilling unit: 10 mg
Labelers
Amneal Pharmaceuticals, LLC; Valorum Biologics, LLC

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$79.982
Per10 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

Alymsys units and claim line

Enter the dose given to get the Q5126 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Alymsys 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.

Alymsys NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
70121-1754-01Q5126Amneal Pharmaceuticals, LLC410
70121-1755-01Q5126Amneal Pharmaceuticals, LLC1640
85006-1754-01Q5126Valorum Biologics, LLC410
85006-1755-01Q5126Valorum Biologics, LLC1640

Alymsys: common questions

What is the HCPCS code for Alymsys?
Alymsys is billed under HCPCS Q5126 — Injection, bevacizumab-maly, biosimilar, (alymsys), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 4 Alymsys NDCs under this code.
How many Q5126 billing units are in a package of Alymsys?
CMS lists 10 to 40 billing units per package, depending on the NDC, where one unit is 10 mg. Units to report are based on the dose given, not the package.
Is Q5126 a CPT code?
No. Q5126 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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