API:  http://id.who.int/icd/release/10/2019/M68
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/M68",
    "parent": [
        "http://id.who.int/icd/release/10/2019/M65-M68"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/M68.0",
        "http://id.who.int/icd/release/10/2019/M68.8"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/M68",
    "code": "M68",
    "title": {
        "@language": "en",
        "@value": "Disorders of synovium and tendon in diseases classified elsewhere"
    },
    "usage": "aster",
    "classKind": "category"
}
Title: Disorders of synovium and tendon in diseases classified elsewhere
Code:  M68

Child

1.  http://id.who.int/icd/release/10/2019/M68.0
2.  http://id.who.int/icd/release/10/2019/M68.8