HCPCS drug code · CMS crosswalk
Mesna J-Code / HCPCS Code
In short
Mesna is billed under HCPCS J9209 — Injection, mesna, 200 mg. One billing unit is 200 mg. CMS's crosswalk lists 6 Mesna NDCs under this code.
Reference
- J9209
- Injection, mesna, 200 mgBilling unit: 200 mg
- Labelers
- Athenex Pharmaceutical Division, LLC; Baxter Healthcare Corporation; FreseniUS Kabi USA, LLC; Hikma Pharmaceuticals USA Inc.; Sagent Pharmaceuticals
Medicare Part B payment limit
CMS ASP filePayment limit per unit$1.203
Per200 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
Mesna units and claim line
Enter the dose given to get the J9209 units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Mesna 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.
| NDC (11-digit) | HCPCS | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| 00143-9260-01 | J9209 | Hikma Pharmaceuticals USA Inc. | 10 | 5 |
| 10019-0953-01 | J9209 | Baxter Healthcare Corporation | 10 | 5 |
| 25021-0201-10 | J9209 | Sagent Pharmaceuticals | 10 | 5 |
| 25021-0201-11 | J9209 | Sagent Pharmaceuticals | 10 × 10 | 50 |
| 63323-0733-11 | J9209 | FreseniUS Kabi USA, LLC | 10 | 5 |
| 70860-0209-10 | J9209 | Athenex Pharmaceutical Division, LLC | 10 | 5 |
Mesna: common questions
- What is the J-code for Mesna?
- Mesna is billed under HCPCS J9209 — Injection, mesna, 200 mg. One billing unit is 200 mg. CMS's crosswalk lists 6 Mesna NDCs under this code.
- How many J9209 billing units are in a package of Mesna?
- CMS lists 5 to 50 billing units per package, depending on the NDC, where one unit is 200 mg. Units to report are based on the dose given, not the package.
- Is J9209 a CPT code?
- No. J9209 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.