API:  http://id.who.int/icd/release/10/2019/M49
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/M49",
    "parent": [
        "http://id.who.int/icd/release/10/2019/M45-M49"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/M49.0",
        "http://id.who.int/icd/release/10/2019/M49.1",
        "http://id.who.int/icd/release/10/2019/M49.2",
        "http://id.who.int/icd/release/10/2019/M49.3",
        "http://id.who.int/icd/release/10/2019/M49.4",
        "http://id.who.int/icd/release/10/2019/M49.5",
        "http://id.who.int/icd/release/10/2019/M49.8"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/M49",
    "code": "M49",
    "title": {
        "@language": "en",
        "@value": "Spondylopathies in diseases classified elsewhere"
    },
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "psoriatic and enteropathic arthropathies"
            }
        }
    ],
    "usage": "aster",
    "classKind": "category"
}