API:  http://id.who.int/icd/release/10/2008/R50-R69
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/R50-R69",
    "parent": [
        "http://id.who.int/icd/release/10/2008/XVIII"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/R50",
        "http://id.who.int/icd/release/10/2008/R51",
        "http://id.who.int/icd/release/10/2008/R52",
        "http://id.who.int/icd/release/10/2008/R53",
        "http://id.who.int/icd/release/10/2008/R54",
        "http://id.who.int/icd/release/10/2008/R55",
        "http://id.who.int/icd/release/10/2008/R56",
        "http://id.who.int/icd/release/10/2008/R57",
        "http://id.who.int/icd/release/10/2008/R58",
        "http://id.who.int/icd/release/10/2008/R59",
        "http://id.who.int/icd/release/10/2008/R60",
        "http://id.who.int/icd/release/10/2008/R61",
        "http://id.who.int/icd/release/10/2008/R62",
        "http://id.who.int/icd/release/10/2008/R63",
        "http://id.who.int/icd/release/10/2008/R64",
        "http://id.who.int/icd/release/10/2008/R68",
        "http://id.who.int/icd/release/10/2008/R69"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/R50-R69",
    "code": "R50-R69",
    "title": {
        "@language": "en",
        "@value": "General symptoms and signs"
    },
    "classKind": "block"
}