API:  http://id.who.int/icd/release/10/2008/G20-G26
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/G20-G26",
    "parent": [
        "http://id.who.int/icd/release/10/2008/VI"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/G20",
        "http://id.who.int/icd/release/10/2008/G21",
        "http://id.who.int/icd/release/10/2008/G22",
        "http://id.who.int/icd/release/10/2008/G23",
        "http://id.who.int/icd/release/10/2008/G24",
        "http://id.who.int/icd/release/10/2008/G25",
        "http://id.who.int/icd/release/10/2008/G26"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/G20-G26",
    "code": "G20-G26",
    "title": {
        "@language": "en",
        "@value": "Extrapyramidal and movement disorders"
    },
    "classKind": "block"
}