API:  http://id.who.int/icd/release/10/2016/O22
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2016/O22",
    "parent": [
        "http://id.who.int/icd/release/10/2016/O20-O29"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2016/O22.0",
        "http://id.who.int/icd/release/10/2016/O22.1",
        "http://id.who.int/icd/release/10/2016/O22.2",
        "http://id.who.int/icd/release/10/2016/O22.3",
        "http://id.who.int/icd/release/10/2016/O22.4",
        "http://id.who.int/icd/release/10/2016/O22.5",
        "http://id.who.int/icd/release/10/2016/O22.8",
        "http://id.who.int/icd/release/10/2016/O22.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2016/en#/O22",
    "code": "O22",
    "title": {
        "@language": "en",
        "@value": "Venous complications and haemorrhoids in pregnancy"
    },
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "obstetric pulmonary embolism"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "the listed conditions as complications of: abortion or ectopic or molar pregnancy"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "the listed conditions as complications of: childbirth and the puerperium"
            }
        }
    ],
    "classKind": "category"
}