Potassium Example

{
  "resourceType" : "Substance",
  "id" : "f203",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Substance</b><a name=\"f203\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Substance &quot;f203&quot; </p></div><p><b>identifier</b>: id:\u00a01234</p><p><b>instance</b>: false</p><p><b>category</b>: Chemical <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.1.0/CodeSystem-substance-category.html\">Substance Category Codes</a>#chemical)</span></p><h3>Codes</h3><table class=\"grid\"><tr><td>-</td><td><b>Concept</b></td></tr><tr><td>*</td><td>Potassium <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#88480006)</span></td></tr></table></div>"
  },
  "identifier" : [{
    "system" : "http://acme.org/identifiers/substances",
    "value" : "1234"
  }],
  "instance" : false,
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/substance-category",
      "code" : "chemical",
      "display" : "Chemical"
    }]
  }],
  "code" : {
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "88480006",
        "display" : "Potassium"
      }]
    }
  }
}