API:  http://id.who.int/icd/release/10/2019/P71
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/P71",
    "parent": [
        "http://id.who.int/icd/release/10/2019/P70-P74"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/P71.0",
        "http://id.who.int/icd/release/10/2019/P71.1",
        "http://id.who.int/icd/release/10/2019/P71.2",
        "http://id.who.int/icd/release/10/2019/P71.3",
        "http://id.who.int/icd/release/10/2019/P71.4",
        "http://id.who.int/icd/release/10/2019/P71.8",
        "http://id.who.int/icd/release/10/2019/P71.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/P71",
    "code": "P71",
    "title": {
        "@language": "en",
        "@value": "Transitory neonatal disorders of calcium and magnesium metabolism"
    },
    "classKind": "category"
}