API:  http://id.who.int/icd/release/10/2008/Q23
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/Q23",
    "parent": [
        "http://id.who.int/icd/release/10/2008/Q20-Q28"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/Q23.0",
        "http://id.who.int/icd/release/10/2008/Q23.1",
        "http://id.who.int/icd/release/10/2008/Q23.2",
        "http://id.who.int/icd/release/10/2008/Q23.3",
        "http://id.who.int/icd/release/10/2008/Q23.4",
        "http://id.who.int/icd/release/10/2008/Q23.8",
        "http://id.who.int/icd/release/10/2008/Q23.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/Q23",
    "code": "Q23",
    "title": {
        "@language": "en",
        "@value": "Congenital malformations of aortic and mitral valves"
    },
    "classKind": "category"
}