[
  {
    "phenotype_id": "PH3363",
    "phenotype_version_id": 8376,
    "name": "COVID-19 Vaccination - Did not attend second appointment",
    "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\nCodes to identify where someone did not attend a second COVID\\-19 vaccination appointment also known as DNAs\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": "2026-01-26T23:14:17.304092Z",
    "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": "2026-01-26T23:14:17.298884Z",
    "references": null,
    "signed_off": [],
    "methodology": "The codes were identified from the builder and cross referenced with NHS Digital terminology news article. For certain studies you may also be intrested in the OpenSAFELY codelist for [not attending the first appointment](https://codelists.opensafely.org/codelist/opensafely/covid-19-vaccination-did-not-attend-first-appointment/300d360f/).\n\n",
    "coding_system": [
      {
        "name": "SNOMED  CT codes",
        "value": 9
      }
    ],
    "open_codelist_id": "opensafely/covid-19-vaccination-did-not-attend-second-appointment",
    "source_reference": "https://www.opencodelists.org/codelist/opensafely/covid-19-vaccination-did-not-attend-second-appointment/53e7a91c",
    "concept_information": [
      {
        "concept_id": 8553,
        "concept_version_id": 16038,
        "concept_name": "opensafely/covid-19-vaccination-did-not-attend-second-appointment/53e7a91c",
        "coding_system": {
          "id": 9,
          "name": "SNOMED  CT codes",
          "description": "SNOMED CT codes"
        },
        "phenotype_id": "PH3363",
        "phenotype_version_id": 8376,
        "phenotype_name": "COVID-19 Vaccination - Did not attend second appointment",
        "code_attribute_header": [],
        "codes": [
          {
            "code": "1240631000000102",
            "description": "Did not attend severe acute respiratory syndrome coronavirus 2 vaccination",
            "attributes": null
          },
          {
            "code": "1324841000000108",
            "description": "Did not attend for second dose of severe acute respiratory syndrome coronavirus 2 vaccine",
            "attributes": null
          }
        ]
      }
    ],
    "coding_system_release": "",
    "open_codelist_version_id": "53e7a91c",
    "open_codelist_version_tag": "",
    "status": 1,
    "doi": "https://doi.org/10.48533/ndtn-7x46",
    "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": 8376,
        "version_name": "COVID-19 Vaccination - Did not attend second appointment",
        "version_date": "2026-01-26T23:14:17.311238Z",
        "is_published": true,
        "is_latest": true
      }
    ]
  }
]