HCPCS Level II · unclassified
J9342 — Injection, thiotepa, not otherwise specified, 1 mg
In short
J9342 is the HCPCS Level II code for injection, thiotepa, not otherwise specified, 1 mg: drugs with no specific code of their own. It has no fixed drug or unit, so the claim carries the NDC of the drug given and its quantity.
Code
CMS HCPCS file- Descriptor
- Injection, thiotepa, not otherwise specified, 1 mg
- Short descriptor
- Inj thiotepa nos 1 mg
- Code set
- HCPCS Level II, maintained by CMS
- Effective
- Jul 1, 2025
The billing unit is read from the descriptor. Confirm it against the CMS file before billing.
Medicare Part B payment limit
CMS ASP fileEffective 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
Units and claim line
Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.
Enter the units to build the claim line.
NDCs billed under J9342
CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 14 NDCs to J9342 for Tepadina and Thiotepa. Billing units per package are CMS’s figures for this code’s unit.
| Drug | NDC (11-digit) | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| Tepadina | 70121-1630-01 | Amneal Pharmaceuticals, LLC | 1 | 15 |
| Tepadina | 70121-1631-01 | Amneal Pharmaceuticals, LLC | 1 | 100 |
| Tepadina | 70121-2749-01 | Amneal Pharmaceuticals, LLC | 1 | 200 |
| Thiotepa | 00143-9292-01 | Hikma Pharmaceuticals USA Inc. | 1 | 100 |
| Thiotepa | 00143-9309-01 | Hikma Pharmaceuticals USA Inc. | 1 | 15 |
| Thiotepa | 00143-9565-01 | Hikma Pharmaceuticals USA Inc. | 1 | 15 |
| Thiotepa | 25021-0246-02 | Sagent Pharmaceuticals | 1 | 15 |
| Thiotepa | 43598-0171-11 | Dr. Reddy's Laboratories Inc. | 1 | 100 |
| Thiotepa | 43598-0650-11 | Dr. Reddy's Laboratories Inc. | 1 | 15 |
| Thiotepa | 65219-0029-20 | FreseniUS Kabi USA, LLC | 1 | 100 |
| Thiotepa | 71288-0156-05 | Meitheal Pharmaceuticals Inc. | 1 | 15 |
| Thiotepa | 71288-0157-10 | Meitheal Pharmaceuticals Inc. | 1 | 100 |
| Thiotepa | 72205-0045-01 | Novadoz Pharmaceuticals LLC | 1 | 15 |
| Thiotepa | 72205-0046-01 | Novadoz Pharmaceuticals LLC | 1 | 100 |
J9342: common questions
- Is J9342 a CPT code?
- No. J9342 is a HCPCS Level II code, maintained by CMS, that identifies a drug with no specific code of its own. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code. CPT codes for drug administration.
- What NDC goes with J9342?
- None is fixed. J9342 is used for drugs that have no specific HCPCS code, so the claim carries the NDC of the drug actually given and its quantity, and payers usually also ask for the drug name and dose. How to find a J-code.
- What is the Medicare payment limit for J9342?
- $5.871 per 1 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.