API:  http://id.who.int/icd/release/10/2008/C69-C72
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/C69-C72",
    "parent": [
        "http://id.who.int/icd/release/10/2008/C00-C75"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/C69",
        "http://id.who.int/icd/release/10/2008/C70",
        "http://id.who.int/icd/release/10/2008/C71",
        "http://id.who.int/icd/release/10/2008/C72"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/C69-C72",
    "code": "C69-C72",
    "title": {
        "@language": "en",
        "@value": "Malignant neoplasms of eye, brain and other parts of central nervous system"
    },
    "classKind": "block"
}