HCPCS Level II drug code
J0585 — Injection, onabotulinumtoxinA, 1 unit
In short
J0585 is the HCPCS Level II code for injection, onabotulinumtoxinA, 1 unit. CMS assigns NDCs for Botox and Botox Cosmetic to it. One billing unit is 1 unit. The Medicare Part B payment limit is $6.514 per unit (October 1, 2026 through December 31, 2026).
Code
Med-Code curated- Descriptor
- Injection, onabotulinumtoxinA, 1 unit
- Code set
- HCPCS Level II, maintained by CMS
- Category
- Neuromuscular Blocker / Toxin
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
Units = dose given ÷ 1 unit. For example, 100 unit 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.
Drugs mapped to J0585
FDA-listed products billed under J0585
Finished products in the FDA NDC Directory whose brand or single active ingredient, and route, match this code’s entry.
| Product | Strength | Form · route | Labeler | Product NDC |
|---|---|---|---|---|
| Botoxonabotulinumtoxina | Botulinum toxin type a 100 [USP'U]/1 | Injection, Powder, Lyophilized, For solutionIntradermal, Intramuscular | Allergan, Inc. | 0023-1145 |
| Botoxonabotulinumtoxina | Botulinum toxin type a 200 [USP'U]/1 | Injection, Powder, Lyophilized, For solutionIntradermal, Intramuscular | Allergan, Inc. | 0023-3921 |
| Botoxonabotulinumtoxina | Botulinum toxin type a 100 [USP'U]/1 | Injection, Powder, Lyophilized, For solutionIntradermal, Intramuscular | Sportpharm LLC | 85766-155 |
| BOTOX Cosmeticonabotulinumtoxina | Botulinum toxin type a 50 [USP'U]/1 | Injection, Powder, Lyophilized, For solutionIntramuscular | Allergan, Inc. | 0023-3919 |
| BOTOX Cosmeticonabotulinumtoxina | Botulinum toxin type a 100 [USP'U]/1 | Injection, Powder, Lyophilized, For solutionIntramuscular | Allergan, Inc. | 0023-9232 |
All NDCs for these drugs
NDCs billed under J0585
CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 4 NDCs to J0585 for Botox and Botox Cosmetic. Billing units per package are CMS’s figures for this code’s unit.
| Drug | NDC (11-digit) | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| Botox | 00023-1145-01 | Allergan, Inc. | 1 | 100 |
| Botox | 00023-3921-02 | Allergan, Inc. | 1 | 200 |
| Botox Cosmetic | 00023-3919-50 | Allergan, Inc. | 1 | 50 |
| Botox Cosmetic | 00023-9232-01 | Allergan, Inc. | 1 | 100 |
J0585: common questions
- Is J0585 a CPT code?
- No. J0585 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 J0585?
- CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under J0585, for Botox and Botox Cosmetic. The table on this page shows each one with its billing units per package.
- What is the Medicare payment limit for J0585?
- $6.514 per 1 unit, 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 J0585?
- One unit of J0585 is 1 unit, as stated in the code's descriptor. Units to report = dose given ÷ 1 unit. J-code billing units.