US Core Implementation Guide
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: MCH Example - JSON Representation

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{
  "resourceType" : "Observation",
  "id" : "cbc-mch",
  "meta" : {
    "profile" : [
      "http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-lab"
    ]
  },
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"cbc-mch\"> </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 Observation &quot;cbc-mch&quot; </p><p style=\"margin-bottom: 0px\">Profile: <a href=\"StructureDefinition-us-core-observation-lab.html\">US Core Laboratory Result Observation Profile</a></p></div><p><b>status</b>: final</p><p><b>category</b>: Laboratory <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.0.0/CodeSystem-observation-category.html\">Observation Category Codes</a>#laboratory)</span></p><p><b>code</b>: MCH <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://loinc.org/\">LOINC</a>#785-6 &quot;MCH [Entitic mass] by Automated count&quot;)</span></p><p><b>subject</b>: <a href=\"Patient-example.html\">Patient/example: Amy Shaw</a> &quot; SHAW&quot;</p><p><b>effective</b>: 2005-07-05</p><p><b>value</b>: 30 pg</p><h3>ReferenceRanges</h3><table class=\"grid\"><tr><td>-</td><td><b>Low</b></td><td><b>High</b></td><td><b>Type</b></td></tr><tr><td>*</td><td>33.2 pg<span style=\"background: LightGoldenRodYellow\"> (Details: UCUM code pg = 'pg')</span></td><td>27.5 pg<span style=\"background: LightGoldenRodYellow\"> (Details: UCUM code pg = 'pg')</span></td><td>Normal Range <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.0.0/CodeSystem-referencerange-meaning.html\">Observation Reference Range Meaning Codes</a>#normal)</span></td></tr></table></div>"
  },
  "status" : "final",
  "category" : [
    {
      "coding" : [
        {
          "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
          "code" : "laboratory",
          "display" : "Laboratory"
        }
      ],
      "text" : "Laboratory"
    }
  ],
  "code" : {
    "coding" : [
      {
        "system" : "http://loinc.org",
        "code" : "785-6",
        "display" : "MCH [Entitic mass] by Automated count"
      }
    ],
    "text" : "MCH"
  },
  "subject" : {
    "reference" : "Patient/example",
    "display" : "Amy Shaw"
  },
  "effectiveDateTime" : "2005-07-05",
  "valueQuantity" : {
    "value" : 30,
    "unit" : "pg",
    "system" : "http://unitsofmeasure.org"
  },
  "referenceRange" : [
    {
      "low" : {
        "value" : 33.2,
        "unit" : "pg",
        "system" : "http://unitsofmeasure.org",
        "code" : "pg"
      },
      "high" : {
        "value" : 27.5,
        "unit" : "pg",
        "system" : "http://unitsofmeasure.org",
        "code" : "pg"
      },
      "type" : {
        "coding" : [
          {
            "system" : "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
            "code" : "normal",
            "display" : "Normal Range"
          }
        ],
        "text" : "Normal Range"
      }
    }
  ]
}