Hydralazine Hydrochloride NDC 51662-1648

NDC codes

FDA NDC Directory

Product NDC (as listed)51662-1648Labeler and product segments. Claims need a package NDC.

Product NDC at billing width51662-1648Add the package segment from the table below.

Package NDCs as listed with the FDA, and the 11-digit 5-4-2 form used on claims. The highlighted digit is the added leading zero.
Package NDC	11-digit (billing)	Package	Copy
51662-1648-3	51662164803	25 POUCH in 1 CASE (51662-1648-3) / 1 VIAL, SINGLE-DOSE in 1 POUCH (51662-1648-2) / 1 mL in 1 VIAL, SINGLE-DOSEMarketed from Jun 30, 1997

How the 11-digit form is made: The package segment has 1 digit, so one leading zero is added to it (5-4-1 → 5-4-2). Formatting the NDC does not by itself make it billable — the product, package and quantity must match what was dispensed or administered, and payer rules apply. Conversion rules

Product information

Brand name (proprietary): Hydralazine Hydrochloride
Generic name (nonproprietary): hydralazine hydrochloride
Active ingredients: Hydralazine hydrochloride — 20 mg/mL
Dosage form: Injection, Solution
Route: Intramuscular, Intravenous
Labeler: HF Acquisition Co LLC, DBA HealthFirst
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 040136
Marketing start: Jun 30, 1997
Listing expires: Dec 31, 2026
Other FDA classes: Arteriolar Vasodilation (Physiologic effect)
Identifiers: Product ID 51662-1648_15b1adc3-9cb5-cf06-e063-6294a90a1da7SPL ID 15b1adc3-9cb5-cf06-e063-6294a90a1da7SPL set ID 15b0f03b-b5a2-c49d-e063-6394a90a5b15RxCUI 966571UNII FD171B778Y
Pharmacologic class: Arteriolar Vasodilator

Billing references

What Med-Code can say about coding this product, and where each statement comes from. Nothing here is inferred from the name alone.

HCPCS codeNo match

No drug-specific HCPCS code in Med-Code's directory for this product. The directory is curated and not complete — check the current CMS HCPCS file before billing.

Administration

Drug administration (CPT 96360–96549)

When a clinician administers the drug, the administration is reported separately. Codes in this range cover hydration, therapeutic injections and infusions, and chemotherapy or other complex drug administration. The right code depends on route, duration and drug type, and self-administered drugs are not billed this way.

How CPT relates to drug billing

NDC on a medical claim

N451662164803 followed by a unit qualifier and the quantity

Package 51662-1648-03. Unit qualifiers: F2 (international unit), GR (gram), ME (milligram), ML (milliliter), UN (unit (each)). The qualifier and quantity depend on what was given. About the N4 qualifier

Product label

Current FDA label (SPL), effective Apr 9, 2024.

Indications (excerpt from the label)

Severe essential hypertension when the drug cannot be given orally or when there is an urgent need to lower blood pressure.

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

Other NDCs under ANDA 040136

Products listed under the same FDA application: other strengths and forms, and repackagers who relabel the same product.

FDA NDC Directory listings under ANDA 040136
Product	Strength	Form · route	Labeler	Product NDC
Hydralazine Hydrochloride	Hydralazine hydrochloride 20 mg/mL	Injection, SolutionIntramuscular, Intravenous	American Regent, Inc.	0517-0901
Hydralazine Hydrochloride	Hydralazine hydrochloride 20 mg/mL	Injection, SolutionIntramuscular, Intravenous	Civica, Inc.	72572-265