Standardized Cat Hair Allergenic Extract Solution
NDC Package 22840-0100-2

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

Package Information

Standardized Cat Hair Allergenic Extract (felis catus) solution is gREER Standardized Cat Hair Allergenic Extract is indicated for:Skin test diagnosis of patients with a history of allergy to cats.Treatment of cat hair-induced allergic asthma, rhinitis and conjunctivitis. This formulation utilizes a solution delivery system. Marketed by Greer Laboratories, Inc., this product is identified by NDC 22840-0100 and is authorized under FDA application BLA103397.

Identification & Billing

NDC Package Code
22840-0100-2
Package Description
10 mL in 1 VIAL, MULTI-DOSE
Product Code
22840-0100
11-Digit Billing Format
22840010002
RxNorm Crosswalk
  • RxCUI: 1813402 - cat dander allergenic extract 10,000 BAU/mL / cat skin extract 10,000 BAU/mL Injectable Solution
  • RxCUI: 1813402 - cat dander allergenic extract 10000 BAU/ML / cat skin extract 10000 BAU/ML Injectable Solution
  • RxCUI: 1813402 - Felis catus dander extract 10,000 BAU/ML / Felis catus skin extract 10,000 BAU/ML Injectable Solution
  • RxCUI: 1813404 - cat dander allergenic extract 5000 BAU/mL / cat skin extract 5000 BAU/mL Injectable Solution
  • RxCUI: 1813404 - cat dander allergenic extract 5000 BAU/ML / cat skin extract 5000 BAU/ML Injectable Solution

Clinical Specifications

Proprietary Name
Standardized Cat Hair Allergenic Extract
Non-Proprietary Name
Felis Catus
Substance Name
Felis Catus Dander; Felis Catus Skin
Dosage Form
Solution - A clear, homogeneous liquid1 dosage form that contains one or more chemical substances dissolved in a solvent or mixture of mutually miscible solvents.
Administration Route
  • Intradermal - Administration within the dermis.
  • Percutaneous - Administration through the skin.
  • Subcutaneous - Administration beneath the skin; hypodermic. Synonymous with the term SUBDERMAL.
Active Ingredient(s)
Pharmacologic Class
Usage Information
GREER Standardized Cat Hair Allergenic Extract is indicated for:Skin test diagnosis of patients with a history of allergy to cats.Treatment of cat hair-induced allergic asthma, rhinitis and conjunctivitis. Immunotherapy is indicated when cat allergy is established and the patient cannot avoid exposure to cat allergens.

Regulatory & Marketing

Labeler Name
Greer Laboratories, Inc.
Product Type
Standardized Allergenic
FDA Application #
BLA103397
Marketing Category
BLA - A product marketed under an approved Biologic License Application.
Start Marketing Date
09-24-1992
Listing Expiration
12-31-2026
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.

Other Available Packages

The following commercial packages are registered under the same Product NDC (22840-0100). Click a package code to view its specific billing and regulatory data.

22840-0100-4
50 mL in 1 VIAL, MULTI-DOSE

* 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 22840-0100-2 identifies a specific commercial package of 10 ml in 1 vial, multi-dose of Standardized Cat Hair Allergenic Extract, a standardized allergenic label labeled by Greer Laboratories, Inc.. This solution is formulated for intradermal; percutaneous; subcutaneous use and contains felis catus dander; felis catus skin 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 Greer Laboratories, Inc. on September 24, 1992. The current certification is valid through December 31, 2026.

How is this Greer Laboratories, Inc. product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 22840010002. 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 (5-4-1)
22840-0100-2
11-Digit CMS (5-4-2)
22840-0100-02

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