API:  http://id.who.int/icd/release/10/2008/D81
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/D81",
    "parent": [
        "http://id.who.int/icd/release/10/2008/D80-D89"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/D81.0",
        "http://id.who.int/icd/release/10/2008/D81.1",
        "http://id.who.int/icd/release/10/2008/D81.2",
        "http://id.who.int/icd/release/10/2008/D81.3",
        "http://id.who.int/icd/release/10/2008/D81.4",
        "http://id.who.int/icd/release/10/2008/D81.5",
        "http://id.who.int/icd/release/10/2008/D81.6",
        "http://id.who.int/icd/release/10/2008/D81.7",
        "http://id.who.int/icd/release/10/2008/D81.8",
        "http://id.who.int/icd/release/10/2008/D81.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/D81",
    "code": "D81",
    "title": {
        "@language": "en",
        "@value": "Combined immunodeficiencies"
    },
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "autosomal recessive agammaglobulinaemia (Swiss type)"
            }
        }
    ],
    "classKind": "category"
}