API:  http://id.who.int/icd/release/10/2019/R52
{
    "@context": "http://id.who.int/icd/contexts/contextForICD10Entity.json",
    "@id": "http://id.who.int/icd/release/10/2019/R52",
    "parent": [
        "http://id.who.int/icd/release/10/2019/R50-R69"
    ],
    "child": [
        "http://id.who.int/icd/release/10/2019/R52.0",
        "http://id.who.int/icd/release/10/2019/R52.1",
        "http://id.who.int/icd/release/10/2019/R52.2",
        "http://id.who.int/icd/release/10/2019/R52.9"
    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/R52",
    "code": "R52",
    "title": {
        "@language": "en",
        "@value": "Pain, not elsewhere classified"
    },
    "inclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "pain not referable to any one organ or body region"
            }
        }
    ],
    "exclusion": [
        {
            "label": {
                "@language": "en",
                "@value": "chronic pain personality syndrome"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "headache"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): abdomen"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): back"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): breast"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): chest"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): ear"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): eye"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): joint"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): limb"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): lumbar region"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): pelvic and perineal"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): psychogenic"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): shoulder"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): spine"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): throat"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): tongue"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "pain (in): tooth"
            }
        },
        {
            "label": {
                "@language": "en",
                "@value": "renal colic"
            }
        }
    ],
    "classKind": "category"
}