J1643 HCPCS Level II code: Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units
J1643 is the HCPCS code for “Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
J1643Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units
Short description: Inj heparin, pfizer, 1000u
HCPCS · United States
Medicare details
The indicators CMS publishes with J1643 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Drugs
- ASC
- Approved for ambulatory surgical centers
- Type of service
- Medical care; ESRD supplies
- BETOS category
- Other drugs
- Added
- Jan 1, 2023
Where J1643 sits
- 1J codesDrugs administered other than orally
- 2Active code J1643Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code J1643 mean?
J1643 is the HCPCS code for “Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover J1643?
CMS lists J1643’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Drugs”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside J1643
All J codesJ1628Injection, guselkumab, 1 mgJ1630Injection, haloperidol, up to 5 mgJ1631Injection, haloperidol decanoate, per 50 mgJ1632Injection, brexanolone, 1 mgJ1640Injection, hemin, 1 mgJ1642Injection, heparin sodium, (heparin lock flush), per 10 unitsJ1644Injection, heparin sodium, per 1000 unitsJ1645Injection, dalteparin sodium, per 2500 iuJ1650Injection, enoxaparin sodium, 10 mgJ1652Injection, fondaparinux sodium, 0.5 mgJ1655Injection, tinzaparin sodium, 1000 iuJ1670Injection, tetanus immune globulin, human, up to 250 units