Xanax Tablet, Extended Release
NDC Package 58151-503-91

View Billable Units, 11-Digit Conversion Format, and RxNorm mappings
Table of Contents
    1. Package Information
    2. Frequently Asked Questions

Package Information

This product is approaching its end of marketing date. An upcoming end of marketing date means the product has been delisted but will remain in the NDC database until the end of marketing date is reached. In most cases, the FDA advises firms to use the expiration date of the last lot produced as the end marketing date, reflecting the possibility that the product may still be available even after manufacturing has stopped.

Xanax (alprazolam) tablets is alprazolam is used to treat anxiety and panic disorders. This formulation utilizes a tablet, extended release delivery system. Marketed by Viatris Specialty Llc, this product is identified by NDC 58151-503 and is authorized under FDA application NDA021434.

Identification & Billing

NDC Package Code
58151-503-91
Package Description
60 TABLET, EXTENDED RELEASE in 1 BOTTLE
Product Code
58151-503
11-Digit Billing Format
58151050391
Billing Unit
EA - Billing unit of "each" is used when the product is dispensed in discreet units.
Units Per Package
60 EA
RxNorm Crosswalk
  • RxCUI: 433798 - ALPRAZolam 0.5 MG 24HR Extended Release Oral Tablet
  • RxCUI: 433798 - 24 HR alprazolam 0.5 MG Extended Release Oral Tablet
  • RxCUI: 433798 - alprazolam 0.5 MG 24 HR Extended Release Oral Tablet
  • RxCUI: 433799 - ALPRAZolam 2 MG 24HR Extended Release Oral Tablet
  • RxCUI: 433799 - 24 HR alprazolam 2 MG Extended Release Oral Tablet

Clinical Specifications

Proprietary Name
Xanax XR
Non-Proprietary Name
Alprazolam
Substance Name
Alprazolam
Dosage Form
Tablet, Extended Release - A solid dosage form containing a drug which allows at least a reduction in dosing frequency as compared to that drug presented in conventional dosage form.
Administration Route
Oral - Administration to or by way of the mouth.
Active Ingredient(s)
ALPRAZOLAM .5 mg/1
Pharmacologic Class
Usage Information
Alprazolam is used to treat anxiety and panic disorders. It belongs to a class of medications called benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect. It works by enhancing the effects of a certain natural chemical in the body (GABA).
DEA Schedule
Schedule IV (CIV) Substances

Regulatory & Marketing

Labeler Name
Viatris Specialty Llc
Product Type
Human Prescription Drug
FDA Application #
NDA021434
Marketing Category
NDA - A product marketed under an approved New Drug Application.
Start Marketing Date
05-21-2024
End Marketing Date
08-31-2026
Exclude Flag
N
Sample Package
No

Hierarchy Structure

Code Lineage

The NDC Directory contains ONLY information on final marketed drugs submitted to FDA electronically by labelers. A labeler might be a manufacturer, re-packager or re-labeler. The product information included in the NDC directory does not indicate that FDA has verified the information provided by the product labeler. Assigned NDC numbers are not in any way an indication of FDA approval of the product.

* Please review the full disclaimer at the bottom of this page.

Frequently Asked Questions

What is the distribution configuration for this product package?

The code 58151-503-91 identifies a specific commercial package of 60 tablet, extended release in 1 bottle of Xanax XR, a human prescription drug labeled by Viatris Specialty Llc. This product is billed for "EA" each discreet unit and contains an estimated amount of 60 billable units per package. This tablet, extended release is formulated for oral use and contains alprazolam as the active substance.

Is this product currently listed with the FDA?

Yes, this product is active and verified within the NDC Directory. It was introduced to the market by Viatris Specialty Llc on May 21, 2024.

What are the primary indications for this medication?

Alprazolam is used to treat anxiety and panic disorders. It belongs to a class of medications called benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect. It works by enhancing the effects of a certain natural chemical in the body (GABA).

How is this Viatris Specialty Llc product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 58151050391. Quantities are measured in per "each", products billed on a per each basis are usually products dispensed in discreet units.. There are 60 total billable units per package. The table below illustrates the segment conversion from the 10-digit labeler code to the 11-digit provider format.

11-Digit Code Conversion

Billing payers usually require a 5-4-2 segment configuration. Below is the conversion from the 10-digit package format to the 11-digit billing format:

10-Digit Format (5-3-2)
58151-503-91
11-Digit CMS (5-4-2)
58151-0503-91

Note: The zero is added to the Product segment to maintain the 5-4-2 structure.