[
  {
    "phenotype_id": "PH2160",
    "phenotype_version_id": 4913,
    "name": "Vitamin K antagonist medication codes",
    "definition": "This codelist was taken from [OpenCodelists](https://www.opencodelists.org/), created by [OpenSAFELY](https://www.opensafely.org/). We recommend viewing this Phenotype on the OpenCodelist website to view the most recent version.\n\n\nTaken from the `VITKANTAGDRUG_COD` NHS drug refset. Contains public sector information licensed under the UK Open Government Licence v3\\.0 (https://www.nationalarchives.gov.uk/doc/open\\-government\\-licence/version/3/).\n\n\n© University of Oxford for the Bennett Institute for Applied Data Science 2025\\. This work may be copied freely for non\\-commercial research and study.\n\n",
    "implementation": null,
    "publications": null,
    "validation": null,
    "citation_requirements": null,
    "created": "2026-01-26T21:51:57.479812Z",
    "author": "NHS Drug Refsets",
    "collections": [
      {
        "name": "OpenCodelist",
        "value": 31
      },
      {
        "name": "Phenotype Library",
        "value": 18
      }
    ],
    "tags": null,
    "organisation": {
      "id": 1,
      "slug": "opensafely",
      "name": "OpenSAFELY"
    },
    "world_access": 1,
    "updated": "2026-01-26T21:51:59.265921Z",
    "references": [],
    "signed_off": [],
    "methodology": "This codelist was imported automatically. The following codes were not found in the Dictionary of Medicines and Devices dictionary and so excluded from this codelist: 319733000, 319740004, 319736008, 319734006, 319746005, 319747001, 375374009, 319745009, 319735007\\.\n\n\nThis may be because this codelist contains both clinical terms and medications. In which case you may need to create another codelist for the missing clinical/medication codes.\n\n",
    "coding_system": [
      {
        "name": "dm+d codes",
        "value": 23
      }
    ],
    "open_codelist_id": "nhs-drug-refsets/vitkantagdrug_cod",
    "source_reference": "https://www.opencodelists.org/codelist/nhs-drug-refsets/vitkantagdrug_cod/20250912",
    "concept_information": [
      {
        "concept_id": 5090,
        "concept_version_id": 12575,
        "concept_name": "nhs-drug-refsets/vitkantagdrug_cod/20250912",
        "coding_system": {
          "id": 23,
          "name": "dm+d codes",
          "description": "..."
        },
        "phenotype_id": "PH2160",
        "phenotype_version_id": 4913,
        "phenotype_name": "Vitamin K antagonist medication codes",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "10138911000001108",
            "description": "Warfarin 1mg tablets (Zentiva Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10139111000001103",
            "description": "Warfarin 3mg tablets (Zentiva Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10139311000001101",
            "description": "Warfarin 5mg tablets (Zentiva Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10305211000001109",
            "description": "Warfarin 500microgram tablets (Accord-UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10417011000001103",
            "description": "Warfarin 500microgram tablets (Arrow Generics Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10418211000001107",
            "description": "Warfarin 1mg tablets (Arrow Generics Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10418411000001106",
            "description": "Warfarin 3mg tablets (Arrow Generics Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10418611000001109",
            "description": "Warfarin 5mg tablets (Arrow Generics Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "10733911000001106",
            "description": "Warfarin 500microgram tablets (Zentiva Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "11610511000001101",
            "description": "Warfarin 5mg/5ml oral suspension sugar free (Rosemont Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "11610711000001106",
            "description": "Warfarin 5mg/5ml oral suspension sugar free (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "11613311000001101",
            "description": "Warfarin 5mg/5ml oral suspension sugar free (VMP)",
            "attributes": null
          },
          {
            "code": "12957311000001102",
            "description": "Warfarin 1.5mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12958011000001104",
            "description": "Warfarin 100micrograms/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12958511000001107",
            "description": "Warfarin 2.5mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12959011000001109",
            "description": "Warfarin 25mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12959411000001100",
            "description": "Warfarin 4.16mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12960011000001105",
            "description": "Warfarin 4mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "12961311000001103",
            "description": "Warfarin 500micrograms/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "13016611000001102",
            "description": "Warfarin 1.5mg/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13016711000001106",
            "description": "Warfarin 100micrograms/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13016811000001103",
            "description": "Warfarin 2.5mg/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13016911000001108",
            "description": "Warfarin 25mg/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13017011000001107",
            "description": "Warfarin 4.16mg/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13017111000001108",
            "description": "Warfarin 4mg/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "13017211000001102",
            "description": "Warfarin 500micrograms/5ml oral solution (VMP)",
            "attributes": null
          },
          {
            "code": "15202611000001100",
            "description": "Warfarin 500microgram tablets (Sigma Pharmaceuticals Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "16071211000001106",
            "description": "Warfarin 1mg tablets (Bristol Laboratories Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "16071411000001105",
            "description": "Warfarin 3mg tablets (Bristol Laboratories Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "16071611000001108",
            "description": "Warfarin 5mg tablets (Bristol Laboratories Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "17637911000001100",
            "description": "Sinthrome 1mg tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "17876511000001102",
            "description": "Warfarin 500microgram tablets (Phoenix Healthcare Distribution Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "17876711000001107",
            "description": "Warfarin 1mg tablets (Phoenix Healthcare Distribution Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "17876911000001109",
            "description": "Warfarin 3mg tablets (Phoenix Healthcare Distribution Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "17877111000001109",
            "description": "Warfarin 5mg tablets (Phoenix Healthcare Distribution Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "18067311000001105",
            "description": "Sinthrome 1mg tablets (Lexon (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "18288311000001103",
            "description": "Warfarin 1mg/ml oral suspension sugar free (Rosemont Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "18290011000001102",
            "description": "Warfarin 1mg/ml oral suspension sugar free (VMP)",
            "attributes": null
          },
          {
            "code": "18297111000001100",
            "description": "Sinthrome 1mg tablets (Mawdsley-Brooks & Company Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "18509011000001102",
            "description": "Coumadin 4mg tablets (Imported (Canada)) (AMP)",
            "attributes": null
          },
          {
            "code": "18614511000001103",
            "description": "Sinthrome 1mg tablets (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "18723611000001101",
            "description": "Warfarin 1mg/ml oral suspension sugar free (Alliance Healthcare (Distribution) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "19835411000001102",
            "description": "Warfarin 1mg tablets (APC Pharmaceuticals & Chemicals (Europe) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "19835611000001104",
            "description": "Warfarin 3mg tablets (APC Pharmaceuticals & Chemicals (Europe) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "19835811000001100",
            "description": "Warfarin 5mg tablets (APC Pharmaceuticals & Chemicals (Europe) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "20367411000001100",
            "description": "Warfarin 1mg/ml oral suspension sugar free (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "204811000001109",
            "description": "Marevan 500microgram tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "20538311000001102",
            "description": "Warfarin 500microgram tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "21749211000001108",
            "description": "Acenocoumarol 1mg tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "21919111000001103",
            "description": "Warfarin 1mg/ml oral suspension sugar free (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "21919311000001101",
            "description": "Warfarin 500microgram tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "21919511000001107",
            "description": "Warfarin 1mg tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "21919811000001105",
            "description": "Warfarin 3mg tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "21920111000001102",
            "description": "Warfarin 5mg tablets (Waymade Healthcare Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "22735311000001104",
            "description": "Warfarin 1mg tablets (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "22735611000001109",
            "description": "Warfarin 3mg tablets (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "22736411000001102",
            "description": "Warfarin 5mg tablets (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "22736711000001108",
            "description": "Warfarin 500microgram tablets (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "22736911000001105",
            "description": "Warfarin 1mg/ml oral suspension sugar free (DE Pharmaceuticals) (AMP)",
            "attributes": null
          },
          {
            "code": "272711000001102",
            "description": "Warfarin 1mg tablets (IVAX Pharmaceuticals UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "284011000001104",
            "description": "Marevan 3mg tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "28988911000001100",
            "description": "Warfarin 1mg tablets (Crescent Pharma Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "28989111000001105",
            "description": "Warfarin 3mg tablets (Crescent Pharma Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "28989311000001107",
            "description": "Warfarin 5mg tablets (Crescent Pharma Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "29953511000001108",
            "description": "Acenocoumarol 1mg tablets (Lexon (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "303111000001107",
            "description": "Warfarin 1mg tablets (Accord-UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "30945211000001105",
            "description": "Warfarin 1mg tablets (Mawdsley-Brooks & Company Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "30945411000001109",
            "description": "Warfarin 3mg tablets (Mawdsley-Brooks & Company Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "30945711000001103",
            "description": "Warfarin 5mg tablets (Mawdsley-Brooks & Company Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "321511000001106",
            "description": "Warfarin 1mg tablets (Sandoz Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "32741911000001103",
            "description": "Warfarin 5mg capsules (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "32742211000001100",
            "description": "Warfarin 3mg capsules (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "32742511000001102",
            "description": "Warfarin 1mg capsules (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "32751111000001103",
            "description": "Warfarin 1mg capsules (VMP)",
            "attributes": null
          },
          {
            "code": "32751211000001109",
            "description": "Warfarin 3mg capsules (VMP)",
            "attributes": null
          },
          {
            "code": "32751311000001101",
            "description": "Warfarin 5mg capsules (VMP)",
            "attributes": null
          },
          {
            "code": "34759911000001108",
            "description": "Warfarin 500microgram tablets (Sun Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "34760111000001106",
            "description": "Warfarin 1mg tablets (Sun Pharmaceutical Industries Europe B.V.) (AMP)",
            "attributes": null
          },
          {
            "code": "34760411000001101",
            "description": "Warfarin 3mg tablets (Sun Pharmaceutical Industries Europe B.V.) (AMP)",
            "attributes": null
          },
          {
            "code": "34760611000001103",
            "description": "Warfarin 5mg tablets (Sun Pharmaceutical Industries Europe B.V.) (AMP)",
            "attributes": null
          },
          {
            "code": "347911000001109",
            "description": "Warfarin 3mg tablets (Viatris UK Healthcare Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3659711000001104",
            "description": "Warfarin 500microgram tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "36843011000001100",
            "description": "Warfarin 1mg tablets (Torrent Pharma (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "36844011000001103",
            "description": "Warfarin 3mg tablets (Torrent Pharma (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "36844311000001100",
            "description": "Warfarin 5mg tablets (Torrent Pharma (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "36911000001105",
            "description": "Warfarin 5mg tablets (Kent Pharma (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "37272811000001105",
            "description": "Warfarin 500microgram tablets (Mawdsley-Brooks & Company Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3780911000001106",
            "description": "Phenindione 10mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3781211000001108",
            "description": "Phenindione 10mg tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "3781411000001107",
            "description": "Phenindione 10mg tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3782011000001106",
            "description": "Phenindione 25mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3782311000001109",
            "description": "Phenindione 25mg tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "3782511000001103",
            "description": "Phenindione 25mg tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3783211000001107",
            "description": "Phenindione 50mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "3783611000001109",
            "description": "Phenindione 50mg tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
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            "description": "Phenindione 50mg tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
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          },
          {
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            "description": "Warfarin 500microgram tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
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          },
          {
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            "description": "Warfarin 5mg tablets (Medihealth (Northern) Ltd) (AMP)",
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          },
          {
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            "description": "Warfarin 500microgram tablets (Medihealth (Northern) Ltd) (AMP)",
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          },
          {
            "code": "39905711000001107",
            "description": "Warfarin 3mg tablets (Medihealth (Northern) Ltd) (AMP)",
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          },
          {
            "code": "39905911000001109",
            "description": "Warfarin 1mg tablets (Medihealth (Northern) Ltd) (AMP)",
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          },
          {
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            "description": "Warfarin 1mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
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            "description": "Acenocoumarol 1mg tablets (VMP)",
            "attributes": null
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          {
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            "description": "Phenindione 10mg tablets (VMP)",
            "attributes": null
          },
          {
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            "description": "Phenindione 25mg tablets (VMP)",
            "attributes": null
          },
          {
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            "description": "Phenindione 50mg tablets (VMP)",
            "attributes": null
          },
          {
            "code": "42217511000001103",
            "description": "Warfarin 1mg tablets (VMP)",
            "attributes": null
          },
          {
            "code": "42217611000001104",
            "description": "Warfarin 3mg tablets (VMP)",
            "attributes": null
          },
          {
            "code": "42217711000001108",
            "description": "Warfarin 4mg tablets (VMP)",
            "attributes": null
          },
          {
            "code": "42217811000001100",
            "description": "Warfarin 500microgram tablets (VMP)",
            "attributes": null
          },
          {
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            "description": "Warfarin 5mg tablets (VMP)",
            "attributes": null
          },
          {
            "code": "42481611000001105",
            "description": "Warfarin 5mg tablets (Strides Pharma UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "42881611000001101",
            "description": "Sinthrome 1mg tablets (Necessity Supplies Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "437711000001102",
            "description": "Warfarin 1mg tablets (Teva UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "456711000001104",
            "description": "Warfarin 3mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "461911000001100",
            "description": "Marevan 5mg tablets (Advanz Pharma) (AMP)",
            "attributes": null
          },
          {
            "code": "473111000001108",
            "description": "Warfarin 3mg tablets (The Boots Company Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "504911000001105",
            "description": "Warfarin 5mg tablets (The Boots Company Plc) (AMP)",
            "attributes": null
          },
          {
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            "description": "Warfarin 3mg tablets (Teva UK Ltd) (AMP)",
            "attributes": null
          },
          {
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            "attributes": null
          },
          {
            "code": "550411000001100",
            "description": "Warfarin 3mg tablets (Sandoz Ltd) (AMP)",
            "attributes": null
          },
          {
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            "description": "Warfarin 3mg tablets (Accord-UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "584211000001100",
            "description": "Warfarin 3mg tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "590411000001106",
            "description": "Warfarin 1mg tablets (The Boots Company Plc) (AMP)",
            "attributes": null
          },
          {
            "code": "617811000001100",
            "description": "Warfarin 5mg tablets (Teva UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "622211000001107",
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            "attributes": null
          },
          {
            "code": "642911000001101",
            "description": "Warfarin 5mg tablets (Accord-UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "727111000001108",
            "description": "Warfarin 5mg tablets (Viatris UK Healthcare Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "729811000001109",
            "description": "Warfarin 5mg tablets (IVAX Pharmaceuticals UK Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "738511000001103",
            "description": "Sinthrome 1mg tablets (Norgine Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "739511000001109",
            "description": "Warfarin 1mg tablets (Alliance Healthcare (Distribution) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "746411000001102",
            "description": "Warfarin 1mg tablets (Viatris UK Healthcare Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "751611000001108",
            "description": "Warfarin 5mg tablets (A A H Pharmaceuticals Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "772211000001101",
            "description": "Warfarin 3mg tablets (Kent Pharma (UK) Ltd) (AMP)",
            "attributes": null
          },
          {
            "code": "8728011000001102",
            "description": "Warfarin 10mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "8728311000001104",
            "description": "Warfarin 10mg/5ml oral suspension (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "8728611000001109",
            "description": "Warfarin 3mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "8729111000001108",
            "description": "Warfarin 3mg/5ml oral suspension (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "8729811000001101",
            "description": "Warfarin 1mg/5ml oral solution (Special Order) (AMP)",
            "attributes": null
          },
          {
            "code": "8730111000001100",
            "description": "Warfarin 1mg/5ml oral suspension (Special Order) (AMP)",
            "attributes": null
          },
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