HCPCS Level II drug code
J7639 — Dornase alfa, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, per milligram
In short
J7639 is the HCPCS Level II code for dornase alfa, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, per milligram. CMS assigns NDCs for Pulmozyme to it. The Medicare Part B payment limit is $56.806 per unit (October 1, 2026 through December 31, 2026).
Code
CMS HCPCS file- Descriptor
- Dornase alfa, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, per milligram
- Short descriptor
- Dornase alfa non-comp unit
- Code set
- HCPCS Level II, maintained by CMS
- Effective
- Jan 1, 2009
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 J7639
CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 1 NDC to J7639 for Pulmozyme. Billing units per package are CMS’s figures for this code’s unit.
| Drug | NDC (11-digit) | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| Pulmozyme | 50242-0100-40 | Genentech, Inc. | 30 × 2.5 | 75 |
J7639: common questions
- Is J7639 a CPT code?
- No. J7639 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 J7639?
- CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 1 NDC under J7639, for Pulmozyme. The table on this page shows each one with its billing units per package.
- What is the Medicare payment limit for J7639?
- $56.806 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.