[
  {
    "phenotype_id": "PH3566",
    "phenotype_version_id": 8640,
    "name": "Methotrexate - oral",
    "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\n[BNF codelist](https://www.thedatalab.org/blog/161/prescribing-data-bnf-codes/) for oral methotrexate.\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": "2026-01-26T23:22:24.993166Z",
    "author": "OpenSAFELY",
    "collections": [
      {
        "name": "OpenCodelist",
        "value": 31
      },
      {
        "name": "Phenotype Library",
        "value": 18
      }
    ],
    "tags": null,
    "organisation": {
      "id": 1,
      "slug": "opensafely",
      "name": "OpenSAFELY"
    },
    "world_access": 1,
    "updated": "2026-01-26T23:22:24.988013Z",
    "references": [
      {
        "url": "https://doi.org/10.3399/bjgp20X710993",
        "title": "BJGP: Trends and variation in unsafe prescribing of methotrexate"
      },
      {
        "url": "https://github.com/opensafely/immunosuppressant-meds-research/issues/77",
        "title": "GitHub Discussion"
      }
    ],
    "signed_off": [],
    "methodology": "This codelist was developed based on methodology used in the DataLab paper on [trends and variation in unsafe prescribing of methotrexate](https://doi.org/10.3399/bjgp20X710993) published in the British Journal of General Practice. All oral methotrexate preparations from chapter 10 of BNF codes were included although the vast majority of prescriptions will be for tablets.\n\n",
    "coding_system": [
      {
        "name": "BNF codes",
        "value": 11
      }
    ],
    "open_codelist_id": "opensafely/methotrexate-oral-bnf",
    "source_reference": "https://www.opencodelists.org/codelist/opensafely/methotrexate-oral-bnf/3eb9b7b2",
    "concept_information": [
      {
        "concept_id": 8817,
        "concept_version_id": 16302,
        "concept_name": "opensafely/methotrexate-oral-bnf/3eb9b7b2",
        "coding_system": {
          "id": 11,
          "name": "BNF codes",
          "description": "BNF codes"
        },
        "phenotype_id": "PH3566",
        "phenotype_version_id": 8640,
        "phenotype_name": "Methotrexate - oral",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "1001030U0AAAAAA",
            "description": "Methotrexate 25mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAABAB",
            "description": "Methotrexate 2.5mg tablets",
            "attributes": null
          },
          {
            "code": "1001030U0AAACAC",
            "description": "Methotrexate 10mg tablets",
            "attributes": null
          },
          {
            "code": "1001030U0AAAEAE",
            "description": "Methotrexate 2.5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAFAF",
            "description": "Methotrexate 5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAHAH",
            "description": "Methotrexate 10mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAIAI",
            "description": "Methotrexate 7.5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAJAJ",
            "description": "Methotrexate 3.75mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAKAK",
            "description": "Methotrexate 12.5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAALAL",
            "description": "Methotrexate 1mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAMAM",
            "description": "Methotrexate 7mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAANAN",
            "description": "Methotrexate 50mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAPAP",
            "description": "Methotrexate 8mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAQAQ",
            "description": "Methotrexate 750micrograms/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAARAR",
            "description": "Methotrexate 15mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAASAS",
            "description": "Methotrexate 12mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAATAT",
            "description": "Methotrexate 17.5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAUAU",
            "description": "Methotrexate 4mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAVAV",
            "description": "Methotrexate 20mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAWAW",
            "description": "Methotrexate 6mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAXAX",
            "description": "Methotrexate 18mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AAAYAY",
            "description": "Methotrexate 22.5mg/5ml oral liquid",
            "attributes": null
          },
          {
            "code": "1001030U0AACFCF",
            "description": "Methotrexate 2mg/ml oral solution sugar free",
            "attributes": null
          },
          {
            "code": "1001030U0BDAAAB",
            "description": "Maxtrex 2.5mg tablets",
            "attributes": null
          },
          {
            "code": "1001030U0BDABAC",
            "description": "Maxtrex 10mg tablets",
            "attributes": null
          },
          {
            "code": "1001030U0BHAACF",
            "description": "Jylamvo 2mg/ml oral solution",
            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "3eb9b7b2",
    "open_codelist_version_tag": "",
    "status": 1,
    "doi": "https://doi.org/10.48533/24t5-kk12",
    "is_deleted": false,
    "publish_status": 2,
    "owner": "ieuan.scanlon",
    "template": {
      "id": 3,
      "name": "OpenCodelists Phenotype",
      "description": "OpenSafely's OpenCodelist Phenotype, visit https://www.opencodelists.org/ to learn more",
      "version_id": 1
    },
    "versions": [
      {
        "version_id": 8640,
        "version_name": "Methotrexate - oral",
        "version_date": "2026-01-26T23:22:25.002646Z",
        "is_published": true,
        "is_latest": true
      }
    ]
  }
]