In short

Kenalog-40 is billed under HCPCS J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 4 Kenalog-40 NDCs under this code.

J3301 code details

Reference

J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mgBilling unit: 10 mg
Labelers
A-S Medication Solutions

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$0.787
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

Kenalog-40 units and claim line

Enter the dose given to get the J3301 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Kenalog-40 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.

Kenalog-40 NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
50090-0256-00J3301A-S Medication Solutions520
50090-0295-01J3301A-S Medication Solutions55
50090-0819-00J3301A-S Medication Solutions1040
50090-2360-00J3301A-S Medication Solutions14

Kenalog-40: common questions

What is the J-code for Kenalog-40?
Kenalog-40 is billed under HCPCS J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 4 Kenalog-40 NDCs under this code.
How many J3301 billing units are in a package of Kenalog-40?
CMS lists 4 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 J3301 a CPT code?
No. J3301 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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