J1643 Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units

Short descriptor: Inj heparin, pfizer, 1000u

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J1643 is the HCPCS Level II code for Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units (2026). It belongs to Section J — Drugs Administered Other Than Oral Method. Under Medicare, its coverage status is: Special coverage instructions apply. Part B pricing methodology: Drugs.

Classification & CMS Attributes

Medicare Coverage
Special coverage instructions apply (code D)
Part B Pricing
Drugs (indicator 51)
Type of Service
Medical care
Effective Date
2024-01-01
2026 Maintenance
No change this year

Drug Details

Drug / Substance
heparin sodium, not therapeutically equivalent to j1644
Dose / Unit
per 1000 units
Route
Injection

See the full HCPCS Table of Drugs (J-codes).

References

Cite This Page

Reference J1643 with the canonical source and edition:

J1643 — Injection, heparin sodium (pfizer), not therapeutically equivalent to j1644, per 1000 units. ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/J1643

Canonical URL: https://icd10codingpro.com/hcpcs-codes/J1643

Related Codes in Section J

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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