In short

Evenity is billed under HCPCS J3111 — Injection, romosozumab-aqqg, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 2 Evenity NDCs under this code.

J3111 code details

Reference

J3111
Injection, romosozumab-aqqg, 1 mgBilling unit: 1 mg
Labelers
Amgen Inc

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$12.792
Per1 mg
Coinsurance18.523%

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

Evenity units and claim line

Enter the dose given to get the J3111 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Evenity 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.

Evenity NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
55513-0880-02J3111Amgen Inc2 × 1.17210
55513-0998-02J3111Amgen Inc2 × 1.17210

Evenity: common questions

What is the J-code for Evenity?
Evenity is billed under HCPCS J3111 — Injection, romosozumab-aqqg, 1 mg. One billing unit is 1 mg. CMS's crosswalk lists 2 Evenity NDCs under this code.
How many J3111 billing units are in a package of Evenity?
CMS lists 210 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 J3111 a CPT code?
No. J3111 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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