API:  http://id.who.int/icd/release/10/2008/R40-R46
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    "@id": "http://id.who.int/icd/release/10/2008/R40-R46",
    "parent": [
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    "child": [
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        "http://id.who.int/icd/release/10/2008/R41",
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        "http://id.who.int/icd/release/10/2008/R43",
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    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2008/en#/R40-R46",
    "code": "R40-R46",
    "title": {
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        "@value": "Symptoms and signs involving cognition, perception, emotional state and behaviour"
    },
    "exclusion": [
        {
            "label": {
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                "@value": "those constituting part of a pattern of mental disorder"
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