API:  http://id.who.int/icd/release/10/2010/R30-R39
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2010/R30-R39",
    "parent": [
        "http://id.who.int/icd/release/10/2010/XVIII"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2010/R30",
        "http://id.who.int/icd/release/10/2010/R31",
        "http://id.who.int/icd/release/10/2010/R32",
        "http://id.who.int/icd/release/10/2010/R33",
        "http://id.who.int/icd/release/10/2010/R34",
        "http://id.who.int/icd/release/10/2010/R35",
        "http://id.who.int/icd/release/10/2010/R36",
        "http://id.who.int/icd/release/10/2010/R39"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2010/en#/R30-R39",
    "code": "R30-R39",
    "title": {
        "@language": "en",
        "@value": "Symptoms and signs involving the urinary system"
    },
    "classKind": "block"
}