This case-insensitive code system http://terminology.hl7.org/CodeSystem/v3-hc-npn defines codes, but no codes are represented here

 <status value="active"/> <experimental value="false"/> <date value="2021-03-22T00:00:00-04:00"/> <publisher value="Health Canada"/> <contact> <name value="Health Canada, Canada"/> </contact> <description value="Natural Product Number (NPN) is an eight (8) digit numerical code assigned to each natural health product approved to be marketed under the Natural Health Products Regulations. A Homeopathic Medicine Number (DIN-HM) is an eight (8) digit numerical code assigned to each homeopathic medicine approved to be marketed under the Natural Health Products Regulations. Further information about this Code System can be found at https://www.canada.ca/en/health-canada/services/drugs-health-products/natural-non-prescription/applications-submissions/product-licensing/licensed-natural-health-products-database.html"/> <caseSensitive value="false"/> <content value="not-present"/> </CodeSystem>