HL7 Terminology (THO)
7.0.0 - publication International flag

HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 7.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

Active Ingredient Group Number Metadata Record

Metadata Record Information Version 20251031
Maintained By HL7 Terminology Services Management Group (TSMG)
Last Updated Date 31 October 2025
Responsible Organizations Health Canada Roles
  • Code System Owner
  • Code System Maintainer (Steward)
  • Code System Publisher
Website https://www.canada.ca/en/health-canada.html
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Code System Names Formal name Active Ingredient Group Number
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Code System Technical Identifiers Identification Record
TSMG-endorsed URI http://terminology.hl7.org/CodeSystem/v3-hc-aign
TSMG-endorsed OID 2.16.840.1.113883.5.1106
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Description
The AIG number is a 10 digit number that identifies products that have the same active ingredient(s) and ingredient strength(s). The AIG is comprised of three portions: * the first portion (2 digits) identifies the number of active ingredients * the second portion(5 digits) identifies the unique groups of active ingredients(s); * the last portion (3 digits) identifies the active ingredient group strength. The strength group has a tolerance of -2% to +10%. Further information about this Code System can be found at https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database/terminology.html
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