{
  "resourceType": "ValueSet",
  "status": "draft",
  "name": "AllAtcVS",
  "id": "all-atc",
  "title": "WHO ATC classification -- all codes",
  "description": "The Anatomical Therapeutic Chemical (ATC) classification -- the World Health Organization's\nclassification of active substances by the organ or system they act on and by their therapeutic,\npharmacological and chemical properties.\n\nIngredient level, and hierarchical: an ATC code places a substance in a class, which makes it the\nuseful code for class-level questions (\"is the patient on any ACE inhibitor\") where an exact\ningredient match is too narrow. It is coarser than CCDD, so this specification prefers CCDD where a\nsource has one and carries ATC where that is what the source gave. Pinned on the `atc` slice of the\nthree medication profiles and on `AllergyIntolerance.code`.\n\nMaintained by the **WHO Collaborating Centre for Drug Statistics Methodology** in Oslo, on behalf\nof the World Health Organization. The classification is browsable at\n<https://www.whocc.no/atc_ddd_index/>; the Centre publishes its own terms for reuse and\nredistribution of the ATC/DDD index files, and reproducing the classification in bulk is governed by\nthose terms rather than being open. Consult the Centre before redistributing content.\n\nThe canonical URI is `http://www.whocc.no/atc`.\n\n**The set enumerates no codes of its own.** It includes the whole system, so it means every code in it, and it exists so the system URI resolves to a definition rather than to nothing. The definition itself stays with the publisher at the canonical above: this specification does not redefine the system and does not restrict it. Where this page shows a list of codes, that list is a SAMPLE reproduced under the publisher's own terms and is not the set's content -- the page says how many of how many it is showing.",
  "url": "https://fhir.apps.health/ValueSet/all-atc",
  "experimental": false,
  "date": "2026-08-22",
  "publisher": "WELLSTAR Technologies Corp.",
  "copyright": "The ATC classification is maintained by the WHO Collaborating Centre for Drug Statistics Methodology on behalf of the World Health Organization, and reuse of the Centre's own edition is governed by its terms (https://www.whocc.no/), which limit distribution to within one organization at a national level. THE CODES SHOWN HERE ARE NOT THAT EDITION: they are ATC as classified in Health Canada's Drug Product Database, and the permission they rest on is the Open Government Licence -- Canada 2.0, which belongs to that provenance and to no other. Contains information licensed under the Open Government Licence -- Canada, obtained from Health Canada's Drug Product Database. This does not imply endorsement by Health Canada. The set itself enumerates no codes; the sample of codes shown on this specification's rendered page is reproduced on that basis.",
  "compose": {
    "include": [
      {
        "system": "http://www.whocc.no/atc"
      }
    ]
  }
}