NDC codes

FDA NDC Directory
Product NDC (as listed)83634-781Labeler and product segments. Claims need a package NDC.
Product NDC at billing width83634-0781Add 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
83634-781-01836340781018363407810125 VIAL, SINGLE-DOSE in 1 CARTON (83634-781-01) / 1 mL in 1 VIAL, SINGLE-DOSE (83634-781-41)Marketed from Sep 1, 2025

How the 11-digit form is made: The product segment has 3 digits, so one leading zero is added to it (5-3-2 → 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)
Diphenhydramine
Generic name (nonproprietary)
diphenhydramine hydrochloride
Active ingredients
Diphenhydramine hydrochloride — 50 mg/mL
Dosage form
Injection, Solution
Route
Intramuscular, Intravenous
Labeler
Avenacy, LLCNDC labeler code 83634
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 205336
Marketing start
Listing expires
Other FDA classes
Histamine H1 Receptor Antagonists (Mechanism)
Identifiers
Product ID 83634-781_908025cf-e126-4241-b794-47d2fd90078eSPL ID 908025cf-e126-4241-b794-47d2fd90078eSPL set ID 00f862aa-6917-45c7-b6aa-1bebb0a45e14RxCUI 1723740UNII TC2D6JAD40
Pharmacologic class
Histamine-1 Receptor Antagonist

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

N483634078101 followed by a unit qualifier and the quantity

Package 83634-0781-01. 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 AND USAGE Diphenhydramine hydrochloride injection, USP is effective in adults and pediatric patients, other than premature infants and neonates, for the following conditions when the oral form is impractical. Antihistaminic For amelioration of allergic reactions to blood or plasma, in anaphylaxis as an adjunct to epinephrine and other standard measures after the acute symptoms have been controlled and for other uncomplicated allergic conditions of the immediate type when oral therapy is impossible or contraindicated. Motion Sickness For active treatment of motion sickness. Antiparkinsonism For use in parkinsonism, when oral therapy is impossible or contraindicated, as follows: pa…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 83634-781

What is NDC 83634-781?
83634-781 is the product NDC for Diphenhydramine (diphenhydramine hydrochloride), Diphenhydramine hydrochloride 50 mg/mL injection, solution, listed with the FDA by Avenacy, LLC. It has 1 package NDC, shown above in 10- and 11-digit form.
What drug is associated with this NDC?
Diphenhydramine (Diphenhydramine hydrochloride).
What is the active ingredient?
Diphenhydramine hydrochloride.
Who is the labeler?
Avenacy, LLC, NDC labeler code 83634. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Diphenhydramine?
6 other product NDCs are listed under this name. See all Diphenhydramine NDCs.
Is there a related HCPCS / J-code?
Not in Med-Code's curated HCPCS directory. See Billing references above.

Other finished products listed under the same name: strengths, forms and labelers.

Other Diphenhydramine NDCs
ProductStrengthForm · routeLabelerProduct NDCPackage NDCs (11-digit)
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjection, SolutionIntramuscular, IntravenousREMEDYREPACK INC.70518-476570518-4765-01
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjection, SolutionIntramuscular, IntravenousFresenius Kabi USA, LLC65219-82065219-0820-01
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjection, SolutionIntramuscular, IntravenousMicro Labs Limited42571-33742571-0337-5642571-0337-7842571-0337-87
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjection, SolutionIntramuscular, IntravenousMicro Labs Limited42571-16942571-0169-55
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 25 mg/1Tablet, CoatedOralAAA Pharmaceutical, Inc.57344-09057344-0090-0257344-0090-03
Diphenhydraminediphenhydramine hydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjection, SolutionIntramuscular, IntravenousFresenius Kabi USA, LLC63323-66463323-0664-16

Other NDCs under ANDA 205336

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

FDA NDC Directory listings under ANDA 205336
ProductStrengthForm · routeLabelerProduct NDC
Diphenhydramine HydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjectionIntramuscular, IntravenousHeritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.23155-264
Diphenhydramine HydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjectionIntramuscular, IntravenousREMEDYREPACK INC.70518-4536
Diphenhydramine HydrochlorideDiphenhydramine hydrochloride 50 mg/mLInjectionIntramuscular, IntravenousMedical Purchasing Solutions, LLC71872-7373

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