{

"resourceType": "Substance",
"id": "f201",
"text": {
  "status": "generated",
  "div": "<div><p><b>Generated Narrative with Details</b></p><p><b>id</b>: f201</p><p><b>code</b>: House dust allergen <span>(Details : {SNOMED CT code '406466009' = '406466009', given as 'House dust allergen'})</span></p></div>"
},
"code": {
  "coding": [
    {
      "system": "http://snomed.info/sct",
      "code": "406466009",
      "display": "House dust allergen"
    }
  ]
}

}