HCPCS Level II drug code
J1631 — Injection, haloperidol decanoate, per 50 mg
In short
J1631 is the HCPCS Level II code for injection, haloperidol decanoate, per 50 mg. CMS assigns NDCs for Haldol Decanoate and Haloperidol Decanoate to it. One billing unit is 50 mg. The Medicare Part B payment limit is $4.847 per unit (October 1, 2026 through December 31, 2026).
Code
CMS HCPCS fileHCPCS codeJ1631
Billing unit50 mg
- Descriptor
- Injection, haloperidol decanoate, per 50 mg
- Short descriptor
- Haloperidol decanoate inj
- Code set
- HCPCS Level II, maintained by CMS
- Effective
- Jan 1, 1997
The billing unit is read from the descriptor. Confirm it against the CMS file before billing.
Medicare Part B payment limit
CMS ASP filePayment limit per unit$4.847
Per50 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
Units and claim line
Units = dose given ÷ 50 mg. For example, 5000 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
NDCs billed under J1631
CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 53 NDCs to J1631 for Haldol Decanoate and Haloperidol Decanoate. Billing units per package are CMS’s figures for this code’s unit.
| Drug | NDC (11-digit) | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| Haldol Decanoate | 50458-0253-03 | Janssen Pharmaceuticals, Inc. | 3 × 1 | 3 |
| Haldol Decanoate | 50458-0254-14 | Janssen Pharmaceuticals, Inc. | 5 × 1 | 10 |
| Haloperidol Decanoate | 00143-9295-01 | Hikma Pharmaceuticals USA Inc. | 1 | 2 |
| Haloperidol Decanoate | 00143-9296-01 | Hikma Pharmaceuticals USA Inc. | 5 | 10 |
| Haloperidol Decanoate | 10147-0921-03 | Patriot Pharmaceuticals, LLC | 3 × 1 | 3 |
| Haloperidol Decanoate | 10147-0922-05 | Patriot Pharmaceuticals, LLC | 5 × 1 | 10 |
| Haloperidol Decanoate | 25021-0831-01 | Sagent Pharmaceuticals | 10 × 1 | 10 |
| Haloperidol Decanoate | 25021-0833-01 | Sagent Pharmaceuticals | 10 × 1 | 20 |
| Haloperidol Decanoate | 25021-0834-05 | Sagent Pharmaceuticals | 5 | 10 |
| Haloperidol Decanoate | 63323-0469-01 | FreseniUS Kabi USA, LLC | 1 | 1 |
| Haloperidol Decanoate | 63323-0469-05 | FreseniUS Kabi USA, LLC | 5 | 5 |
| Haloperidol Decanoate | 63323-0471-01 | FreseniUS Kabi USA, LLC | 1 | 2 |
| Haloperidol Decanoate | 63323-0471-05 | FreseniUS Kabi USA, LLC | 5 | 10 |
| Haloperidol Decanoate | 63323-0471-41 | FreseniUS Kabi USA, LLC | 1 | 2 |
| Haloperidol Decanoate | 65145-0167-10 | Caplin Steriles USA Inc. | 10 × 1 | 20 |
| Haloperidol Decanoate | 65145-0168-10 | Caplin Steriles USA Inc. | 10 × 1 | 10 |
| Haloperidol Decanoate | 65145-0169-01 | Caplin Steriles USA Inc. | 5 | 10 |
| Haloperidol Decanoate | 67457-0409-13 | Mylan Institutional LLC | 5 × 1 | 10 |
| Haloperidol Decanoate | 67457-0410-13 | Mylan Institutional LLC | 10 × 1 | 10 |
| Haloperidol Decanoate | 68001-0578-48 | BluePoint Laboratories | 3 × 1 | 3 |
| Haloperidol Decanoate | 68001-0579-48 | BluePoint Laboratories | 5 × 1 | 10 |
| Haloperidol Decanoate | 68001-0580-41 | BluePoint Laboratories | 1 | 1 |
| Haloperidol Decanoate | 68001-0581-41 | BluePoint Laboratories | 1 | 2 |
| Haloperidol Decanoate | 68001-0581-48 | BluePoint Laboratories | 5 × 1 | 10 |
| Haloperidol Decanoate | 68001-0581-82 | BluePoint Laboratories | 10 × 1 | 20 |
| Haloperidol Decanoate | 68001-0582-41 | BluePoint Laboratories | 5 | 10 |
| Haloperidol Decanoate | 68001-0657-51 | BluePoint Laboratories | 3 × 1 | 3 |
| Haloperidol Decanoate | 68001-0658-41 | BluePoint Laboratories | 1 | 2 |
| Haloperidol Decanoate | 68001-0658-52 | BluePoint Laboratories | 5 × 1 | 10 |
| Haloperidol Decanoate | 68001-0659-41 | BluePoint Laboratories | 5 | 10 |
| Haloperidol Decanoate | 70069-0030-03 | Somerset Pharma, LLC | 3 × 1 | 3 |
| Haloperidol Decanoate | 70069-0031-05 | Somerset Pharma, LLC | 5 × 1 | 10 |
| Haloperidol Decanoate | 70069-0381-01 | Somerset Pharma, LLC | 1 | 1 |
| Haloperidol Decanoate | 70069-0381-10 | Somerset Pharma, LLC | 10 × 1 | 10 |
| Haloperidol Decanoate | 70069-0383-01 | Somerset Pharma, LLC | 1 | 2 |
| Haloperidol Decanoate | 70069-0383-05 | Somerset Pharma, LLC | 5 × 1 | 10 |
| Haloperidol Decanoate | 70069-0384-01 | Somerset Pharma, LLC | 5 | 10 |
| Haloperidol Decanoate | 70710-1461-06 | Zydus Pharmaceuticals (USA) Inc. | 10 × 1 | 10 |
| Haloperidol Decanoate | 70710-1461-09 | Zydus Pharmaceuticals (USA) Inc. | 3 × 1 | 3 |
| Haloperidol Decanoate | 70710-1463-01 | Zydus Pharmaceuticals (USA) Inc. | 1 | 2 |
| Haloperidol Decanoate | 70710-1463-05 | Zydus Pharmaceuticals (USA) Inc. | 5 × 1 | 10 |
| Haloperidol Decanoate | 70710-1464-01 | Zydus Pharmaceuticals (USA) Inc. | 5 | 10 |
| Haloperidol Decanoate | 70710-1464-05 | Zydus Pharmaceuticals (USA) Inc. | 5 × 5 | 50 |
| Haloperidol Decanoate | 70756-0615-10 | Lifestar Pharma | 10 × 1 | 10 |
| Haloperidol Decanoate | 70756-0615-81 | Lifestar Pharma | 1 | 1 |
| Haloperidol Decanoate | 70756-0616-10 | Lifestar Pharma | 10 × 1 | 20 |
| Haloperidol Decanoate | 70756-0616-81 | Lifestar Pharma | 1 | 2 |
| Haloperidol Decanoate | 70756-0625-85 | Lifestar Pharma | 5 | 10 |
| Haloperidol Decanoate | 71288-0502-02 | Meitheal Pharmaceuticals Inc. | 10 × 1 | 10 |
| Haloperidol Decanoate | 71288-0503-02 | Meitheal Pharmaceuticals Inc. | 10 × 1 | 20 |
| Haloperidol Decanoate | 71288-0504-05 | Meitheal Pharmaceuticals Inc. | 5 | 10 |
| Haloperidol Decanoate | 72485-0520-10 | Armas Pharmaceuticals Inc. | 10 × 1 | 10 |
| Haloperidol Decanoate | 72603-0230-01 | Northstar RxLLC | 1 | 2 |
J1631: common questions
- Is J1631 a CPT code?
- No. J1631 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. 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 NDCs are billed under J1631?
- CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 53 NDCs under J1631, for Haldol Decanoate and Haloperidol Decanoate. The table on this page shows each one with its billing units per package.
- What is the Medicare payment limit for J1631?
- $4.847 per 50 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.
- What is one billing unit of J1631?
- One unit of J1631 is 50 mg, as stated in the code's descriptor. Units to report = dose given ÷ 50 mg. J-code billing units.