Oxygen Saturation by Pulse Oximetry Example (DeviceMetricObservation profile)

{
  "resourceType" : "Observation",
  "id" : "satO2",
  "meta" : {
    "profile" : ["http://hl7.org/fhir/StructureDefinition/vitalsigns"]
  },
  "identifier" : [{
    "system" : "http://goodcare.org/observation/id",
    "value" : "o1223435-10"
  }],
  "partOf" : [{
    "reference" : "Procedure/ob"
  }],
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "vital-signs",
      "display" : "Vital Signs"
    }],
    "text" : "Vital Signs"
  },
  {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "2708-6",
      "display" : "Oxygen saturation in Arterial blood"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "59408-5",
      "display" : "Oxygen saturation in Arterial blood by Pulse oximetry"
    },
    {
      "system" : "urn:iso:std:iso:11073:10101",
      "code" : "150456",
      "display" : "MDC_PULS_OXIM_SAT_O2"
    }]
  },
  "subject" : {
    "reference" : "Patient/example"
  },
  "effectiveDateTime" : "2014-12-05T09:30:10+01:00",
  "valueQuantity" : {
    "value" : 95,
    "unit" : "%",
    "system" : "http://unitsofmeasure.org",
    "code" : "%"
  },
  "interpretation" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
      "code" : "N",
      "display" : "Normal"
    }],
    "text" : "Normal (applies to non-numeric results)"
  }],
  "device" : {
    "reference" : "DeviceMetric/example"
  },
  "referenceRange" : [{
    "low" : {
      "value" : 90,
      "unit" : "%",
      "system" : "http://unitsofmeasure.org",
      "code" : "%"
    },
    "high" : {
      "value" : 99,
      "unit" : "%",
      "system" : "http://unitsofmeasure.org",
      "code" : "%"
    }
  }]
}