API:  http://id.who.int/icd/release/10/2019/B18.0
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/B18.0",
    "parent": [
        "http://id.who.int/icd/release/10/2019/B18"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/B18.00",
        "http://id.who.int/icd/release/10/2019/B18.09"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/B18.0",
    "code": "B18.0",
    "title": {
        "@language": "en",
        "@value": "Chronic viral hepatitis B with delta-agent"
    },
    "classKind": "category"
}
Title: Chronic viral hepatitis B with delta-agent
Code:  B18.0

Child

1.  http://id.who.int/icd/release/10/2019/B18.00
2.  http://id.who.int/icd/release/10/2019/B18.09