The short version
4 companies supply this market — a reasonable cushion if one runs into trouble.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Busulfex
busulfan · BUSULFAN 6 mg/mL · Injection · Intravenous · Otsuka America Pharmaceutical, Inc.
NDC 59148-0070-91 · 8 CARTON in 1 CARTON / 1 VIAL in 1 CARTON / 10 mL in 1 VIAL · NDA · View full market →
One drug, every price
The same NDC has different prices depending on who is paying. Units differ between rungs — compare within a rung over time, not rung against rung, unless the units match.
ⓘ How this was built
Data sources
- CMS NADAC (pharmacy acquisition, weekly)
- CMS Part B ASP quarterly payment limits
- CMS Maximum Fair Prices (IRA negotiated, NDC-level)
- Medicare Part D Spending by Drug (data.cms.gov, name-matched)
- VA FSS / Big4 federal contract prices (va.gov, twice monthly)
- ACA Federal Upper Limits + weighted AMP (data.medicaid.gov, monthly)
- California SB-17 WAC filings (list price, per package)
Method
Each rung is the newest figure for this NDC from one federal price system, shown with its own unit. Part D is matched by drug name because CMS publishes no NDCs there; it is gross spending, before confidential rebates.
Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.
- Medicare Part B pays (ASP+6%)$1.03per billing unit (1 MG)HCPCS J0594 · Jul 1, 2026
- Part D plans paid (avg)$278.18per dosage unitgross, before rebates — matched by drug name · 2024
Medicare Part D
No Medicare Part D plan in CMS's quarterly files lists this product. That usually means it is discontinued, a repackager's listing, or a product no plan has added to its formulary.
How Part D pricing works →NADAC price per unit
No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Estimated fill cost
WAC per package, as filed
$4,000.00
Reported to Texas DSHS · 2026 annual filing · Otsuka America Pharmaceutical, Inc.
Manufacturer list price as filed — not what pharmacies actually pay after discounts.
Medicare Part B (ASP)
Payment limit per 1 MG
$1.033
HCPCS J0594 · Jul 1, 2026 quarter · typically ASP + 6%
Supply fragility
Not scored — fragility is computed for NADAC-priced NDCs.
Is this a "specialty" drug?
There's no legal definition — it meets 2 of 6 public criteria. Why that matters →
- Part D specialty tier
- Costs ≥ $950/fill · avg $11,040.29 per prescription
- Biologic (BLA)
- Injectable / infused
- Orphan-drug exclusivity
- REMS program
Regulatory
- Application
- NDA020954
- TE code
- AP
- Approval date
- Feb 4, 1999
- Patents / exclusivity
- None on file
Shortage history
No FDA shortage reports for this drug or its presentations.
Recalls (this NDC)
No enforcement reports list this package NDC.
Manufacturers of busulfan (Injection)
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Accord Healthcare, Inc | BUSULFAN 6 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Amneal Pharmaceuticals LLC | BUSULFAN 6 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Bamboo US Bidco LCC | BUSULFAN 6 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Pharmascience Inc. | BUSULFAN 6 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Otsuka America Pharmaceutical, Inc. | BUSULFAN 6 mg/mL | Jul 15, 2026 | Jul 29, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
Cite this page
DrugDashboards, "Busulfex — NDC 59148-0070-91," retrieved September 3, 2026, https://drugdashboards.com/drug/59148007091.
Free to cite with attribution — see how the data is put together.