[
  {
    "phenotype_id": "PH3729",
    "phenotype_version_id": 8854,
    "name": "Sodium tests (numerical value)",
    "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\nA SNOMED CT codelist for patients receiving monitoring of sodium levels, with a numerical value.\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": "2026-01-26T23:31:34.127410Z",
    "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": "2026-01-26T23:31:35.297157Z",
    "references": [],
    "signed_off": [],
    "methodology": "We identified the full set of sodium level codes (see sodium tests codelist), and excluded any codes which did not have at least 10 thousand codes in EMIS and SystmOne recorded in 2020, where a reasonable proportion had numerical values attached.\n\n\nOriginal signoff \\[32bff605] by Richard Croker and Brian Mackenna (April 2021\\) Updated version \\[1f50a646] by Richard Croker and Andrew Brown (Feb 2025\\)\n\n",
    "coding_system": [
      {
        "name": "SNOMED  CT codes",
        "value": 9
      }
    ],
    "open_codelist_id": "opensafely/sodium-tests-numerical-value",
    "source_reference": "https://www.opencodelists.org/codelist/opensafely/sodium-tests-numerical-value/1f50a646",
    "concept_information": [
      {
        "concept_id": 9031,
        "concept_version_id": 16516,
        "concept_name": "opensafely/sodium-tests-numerical-value/1f50a646",
        "coding_system": {
          "id": 9,
          "name": "SNOMED  CT codes",
          "description": "SNOMED CT codes"
        },
        "phenotype_id": "PH3729",
        "phenotype_version_id": 8854,
        "phenotype_name": "Sodium tests (numerical value)",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "1000661000000107",
            "description": "Serum sodium level",
            "attributes": null
          },
          {
            "code": "1012681000000101",
            "description": "Blood sodium level",
            "attributes": null
          },
          {
            "code": "1017381000000106",
            "description": "Plasma sodium level",
            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "1f50a646",
    "open_codelist_version_tag": "",
    "status": 1,
    "doi": "https://doi.org/10.48533/zp3p-4p13",
    "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": 8854,
        "version_name": "Sodium tests (numerical value)",
        "version_date": "2026-01-26T23:31:35.309099Z",
        "is_published": true,
        "is_latest": true
      },
      {
        "version_id": 8853,
        "version_name": "Sodium tests (numerical value)",
        "version_date": "2026-01-26T23:31:34.133357Z",
        "is_published": true,
        "is_latest": false
      }
    ]
  }
]