API:  http://id.who.int/icd/release/10/2016/X59
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2016/X59",
    "parent": [
        "http://id.who.int/icd/release/10/2016/X58-X59"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2016/X59.0",
        "http://id.who.int/icd/release/10/2016/X59.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2016/en#/X59",
    "code": "X59",
    "title": {
        "@language": "en",
        "@value": "Exposure to unspecified factor"
    },
    "classKind": "category"
}