API:  http://id.who.int/icd/release/10/2008/G40-G47
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/G40-G47",
    "parent": [
        "http://id.who.int/icd/release/10/2008/VI"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/G40",
        "http://id.who.int/icd/release/10/2008/G41",
        "http://id.who.int/icd/release/10/2008/G43",
        "http://id.who.int/icd/release/10/2008/G44",
        "http://id.who.int/icd/release/10/2008/G45",
        "http://id.who.int/icd/release/10/2008/G46",
        "http://id.who.int/icd/release/10/2008/G47"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/G40-G47",
    "code": "G40-G47",
    "title": {
        "@language": "en",
        "@value": "Episodic and paroxysmal disorders"
    },
    "classKind": "block"
}