API:  http://id.who.int/icd/release/10/2008/H49-H52
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2008/H49-H52",
    "parent": [
        "http://id.who.int/icd/release/10/2008/VII"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2008/H49",
        "http://id.who.int/icd/release/10/2008/H50",
        "http://id.who.int/icd/release/10/2008/H51",
        "http://id.who.int/icd/release/10/2008/H52"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/H49-H52",
    "code": "H49-H52",
    "title": {
        "@language": "en",
        "@value": "Disorders of ocular muscles, binocular movement, accommodation and refraction"
    },
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "nystagmus and other irregular eye movements"
            }
        }
    ],
    "classKind": "block"
}