In short

Avtozma is billed under HCPCS Q5156 — Injection, tocilizumab-anoh (avtozma), biosimilar, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 3 Avtozma NDCs under this code.

Q5156 code details

Reference

Q5156
Injection, tocilizumab-anoh (avtozma), biosimilar, 1 mgBilling unit: 1 mg
Labelers
Celltrion USA, Inc.

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$3.098
Per1 mg
Coinsurance20%

Effective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. CMS note: 8% of reference add-on applied. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files

Avtozma units and claim line

Enter the dose given to get the Q5156 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Avtozma 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.

Avtozma NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
72606-0042-01Q5156Celltrion USA, Inc.480
72606-0043-01Q5156Celltrion USA, Inc.10200
72606-0044-01Q5156Celltrion USA, Inc.20400

Avtozma: common questions

What is the HCPCS code for Avtozma?
Avtozma is billed under HCPCS Q5156 — Injection, tocilizumab-anoh (avtozma), biosimilar, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 3 Avtozma NDCs under this code.
How many Q5156 billing units are in a package of Avtozma?
CMS lists 80 to 400 billing units per package, depending on the NDC, where one unit is 1 mg. Units to report are based on the dose given, not the package.
Is Q5156 a CPT code?
No. Q5156 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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