[
  {
    "phenotype_id": "PH3353",
    "phenotype_version_id": 8358,
    "name": "COPD - secondary care",
    "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\nIdentifies COPD hospital admissions.\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": "2026-01-26T23:13:44.296923Z",
    "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": "2026-01-26T23:13:44.286912Z",
    "references": [
      {
        "url": "https://www.dovepress.com/recording-of-hospitalizations-for-acute-exacerbations-of-copd-in-uk-el-peer-reviewed-fulltext-article-CLEP#T4",
        "title": "Rothnie KJ, Müllerová H, Thomas SL, Chandan JS, Smeeth L, Hurst JR, Davis K, Quint JK. Recording of hospitalizations for acute exacerbations of COPD in UK electronic health care records. Clin Epidemiol. 2016;8:771-782"
      }
    ],
    "signed_off": [],
    "methodology": "This codelist is part of a validated algorithm to identify chronic obstructive pulmonary disease (COPD) exacerbation (see reference). COPD exacerbation in secondary care is identified if any of the following criteria are met: 1\\) COPD exacerbation specific code (COPD exacerbation codelist) in any position. 2\\) COPD diagnosis code (this codelist) in first position. 3\\) Lower respiratory tract infection code (lower respiratory tract infection secondary care codelist) in first position and a COPD diagnosis code in any position.\n\n\nDiscussion here: https://github.com/opensafely/codelist\\-development/issues/185\n\n",
    "coding_system": [
      {
        "name": "ICD10 codes",
        "value": 4
      }
    ],
    "open_codelist_id": "opensafely/copd-secondary-care",
    "source_reference": "https://www.opencodelists.org/codelist/opensafely/copd-secondary-care/35734162",
    "concept_information": [
      {
        "concept_id": 8535,
        "concept_version_id": 16020,
        "concept_name": "opensafely/copd-secondary-care/35734162",
        "coding_system": {
          "id": 4,
          "name": "ICD10 codes",
          "description": "ICD10 Codes"
        },
        "phenotype_id": "PH3353",
        "phenotype_version_id": 8358,
        "phenotype_name": "COPD - secondary care",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "J439",
            "description": "Emphysema, unspecified",
            "attributes": null
          },
          {
            "code": "J448",
            "description": "Other specified chronic obstructive pulmonary disease",
            "attributes": null
          },
          {
            "code": "J449",
            "description": "Chronic obstructive pulmonary disease, unspecified",
            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "35734162",
    "open_codelist_version_tag": "",
    "status": 1,
    "doi": "https://doi.org/10.48533/tn3r-yk03",
    "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": 8358,
        "version_name": "COPD - secondary care",
        "version_date": "2026-01-26T23:13:44.306781Z",
        "is_published": true,
        "is_latest": true
      }
    ]
  }
]