NDC codes

FDA NDC Directory
Product NDC (as listed)51662-1388Labeler and product segments. Claims need a package NDC.
Product NDC at billing width51662-1388Add 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 NDC11-digit (billing)PackageCopy
51662-1388-1516621388011 mL in 1 VIAL, SINGLE-DOSE (51662-1388-1)Marketed from Oct 7, 2019

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
Route
Intramuscular, Intravenous
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 040730
Marketing start
Listing expires
Other FDA classes
Arteriolar Vasodilation (Physiologic effect)
Identifiers
Product ID 51662-1388_2b377557-c2e1-ba26-e063-6394a90a64adSPL ID 2b377557-c2e1-ba26-e063-6394a90a64adSPL set ID 94530e4d-b1c0-6171-e053-2a95a90a05faRxCUI 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

N451662138801 followed by a unit qualifier and the quantity

Package 51662-1388-01. 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 .

Indications (excerpt from the label)

Indications & Usage 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)

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