[
  {
    "phenotype_id": "PH2892",
    "phenotype_version_id": 7376,
    "name": "Peak expiratory flow rate (PEFR) 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 `PEFR_COD` refset published by NHSD. 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": "2026-01-26T22:50:33.510710Z",
    "author": "NHSD Primary Care Domain Refsets",
    "collections": [
      {
        "name": "OpenCodelist",
        "value": 31
      },
      {
        "name": "Phenotype Library",
        "value": 18
      }
    ],
    "tags": null,
    "organisation": {
      "id": 1,
      "slug": "opensafely",
      "name": "OpenSAFELY"
    },
    "world_access": 1,
    "updated": "2026-01-26T22:50:36.855120Z",
    "references": [
      {
        "url": "https://digital.nhs.uk/data-and-information/data-collections-and-data-sets/data-collections/quality-and-outcomes-framework-qof/quality-and-outcome-framework-qof-business-rules/primary-care-domain-reference-set-portal",
        "title": "Primary Care Domain Reference Set Portal"
      }
    ],
    "signed_off": [],
    "methodology": "",
    "coding_system": [
      {
        "name": "SNOMED  CT codes",
        "value": 9
      }
    ],
    "open_codelist_id": "nhsd-primary-care-domain-refsets/pefr_cod",
    "source_reference": "https://www.opencodelists.org/codelist/nhsd-primary-care-domain-refsets/pefr_cod/20250912",
    "concept_information": [
      {
        "concept_id": 7553,
        "concept_version_id": 15038,
        "concept_name": "nhsd-primary-care-domain-refsets/pefr_cod/20250912",
        "coding_system": {
          "id": 9,
          "name": "SNOMED  CT codes",
          "description": "SNOMED CT codes"
        },
        "phenotype_id": "PH2892",
        "phenotype_version_id": 7376,
        "phenotype_name": "Peak expiratory flow rate (PEFR) codes",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "1084021000000103",
            "description": "Number of consecutive days at less than 80% peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "134432000",
            "description": "Recorded/predicted peak expiratory flow rate ratio",
            "attributes": null
          },
          {
            "code": "165871000000103",
            "description": "Peak expiratory flow rate measured using EN 13826 device",
            "attributes": null
          },
          {
            "code": "18491006",
            "description": "Peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "251936000",
            "description": "Best ever peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "251939007",
            "description": "Single peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "251940009",
            "description": "Serial peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "271507006",
            "description": "Peak flow rate after bronchodilation",
            "attributes": null
          },
          {
            "code": "271529005",
            "description": "Peak flow rate before bronchodilation",
            "attributes": null
          },
          {
            "code": "29893006",
            "description": "Peak expiratory flow measurement",
            "attributes": null
          },
          {
            "code": "313232000",
            "description": "Peak expiratory flow rate after bronchodilation",
            "attributes": null
          },
          {
            "code": "313276007",
            "description": "Peak expiratory flow rate before bronchodilation",
            "attributes": null
          },
          {
            "code": "37494006",
            "description": "Increased peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "401004000",
            "description": "Peak expiratory flow rate monitoring",
            "attributes": null
          },
          {
            "code": "401011001",
            "description": "Peak expiratory flow rate monitoring using diary",
            "attributes": null
          },
          {
            "code": "401014009",
            "description": "Peak expiratory flow rate pre steroids",
            "attributes": null
          },
          {
            "code": "401015005",
            "description": "Peak expiratory flow rate post steroids",
            "attributes": null
          },
          {
            "code": "401163005",
            "description": "Percentage of best ever peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "401199000",
            "description": "Percentage of peak expiratory flow rate variability",
            "attributes": null
          },
          {
            "code": "407668008",
            "description": "Serial peak expiratory flow rate abnormal",
            "attributes": null
          },
          {
            "code": "414883002",
            "description": "Number of consecutive days at less than 80 percent peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "429745009",
            "description": "Diurnal variation of peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "716760001",
            "description": "Assessment using European Union Scale for Peak Expiratory Flow Rate for adults",
            "attributes": null
          },
          {
            "code": "716761002",
            "description": "Assessment using European Union Scale for Peak Expiratory Flow Rate for children",
            "attributes": null
          },
          {
            "code": "7206008",
            "description": "Decreased peak expiratory flow rate",
            "attributes": null
          },
          {
            "code": "763131000000100",
            "description": "Peak expiratory flow rate after exercise",
            "attributes": null
          },
          {
            "code": "878870000",
            "description": "Peak expiratory flow rate after exercise",
            "attributes": null
          },
          {
            "code": "980161000000106",
            "description": "European Union Scale for Peak Expiratory Flow Rate - Adult",
            "attributes": null
          },
          {
            "code": "980181000000102",
            "description": "European Union Scale for Peak Expiratory Flow Rate - Children",
            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "080826eb",
    "open_codelist_version_tag": "20250912",
    "status": 1,
    "doi": "https://doi.org/10.48533/w429-4594",
    "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": 7376,
        "version_name": "Peak expiratory flow rate (PEFR) codes",
        "version_date": "2026-01-26T22:50:36.867569Z",
        "is_published": true,
        "is_latest": true
      },
      {
        "version_id": 7375,
        "version_name": "Peak expiratory flow rate (PEFR) codes",
        "version_date": "2026-01-26T22:50:35.779495Z",
        "is_published": true,
        "is_latest": false
      },
      {
        "version_id": 7374,
        "version_name": "Peak expiratory flow rate (PEFR) codes",
        "version_date": "2026-01-26T22:50:34.656642Z",
        "is_published": true,
        "is_latest": false
      },
      {
        "version_id": 7373,
        "version_name": "Peak expiratory flow rate (PEFR) codes",
        "version_date": "2026-01-26T22:50:33.518130Z",
        "is_published": true,
        "is_latest": false
      }
    ]
  }
]