API:  http://id.who.int/icd/release/10/2019/B20
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/B20",
    "parent": [
        "http://id.who.int/icd/release/10/2019/B20-B24"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/B20.0",
        "http://id.who.int/icd/release/10/2019/B20.1",
        "http://id.who.int/icd/release/10/2019/B20.2",
        "http://id.who.int/icd/release/10/2019/B20.3",
        "http://id.who.int/icd/release/10/2019/B20.4",
        "http://id.who.int/icd/release/10/2019/B20.5",
        "http://id.who.int/icd/release/10/2019/B20.6",
        "http://id.who.int/icd/release/10/2019/B20.7",
        "http://id.who.int/icd/release/10/2019/B20.8",
        "http://id.who.int/icd/release/10/2019/B20.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/B20",
    "code": "B20",
    "title": {
        "@language": "en",
        "@value": "Human immunodeficiency virus [HIV] disease resulting in infectious and parasitic diseases"
    },
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "acute HIV infection syndrome"
            }
        }
    ],
    "classKind": "category"
}