{
  "resourceType" : "Observation",
  "id" : "example-cgm-series-data-unavailable",
  "meta" : {
    "profile" : ["https://gematik.de/fhir/hddt/StructureDefinition/hddt-continuous-glucose-measurement"]
  },
  "status" : "preliminary",
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "99504-3",
      "display" : "Glucose [Mass/volume] in Interstitial fluid"
    }]
  },
  "effectivePeriod" : {
    "start" : "2025-09-01T08:00:00+02:00",
    "end" : "2025-09-01T10:00:00+02:00"
  },
  "dataAbsentReason" : {
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/data-absent-reason",
      "code" : "temp-unknown",
      "display" : "Temporarily Unknown"
    }]
  },
  "note" : [{
    "text" : "Sensor warm-up phase, values not yet validated."
  }],
  "device" : {
    "reference" : "DeviceMetric/example-devicemetric-cgm"
  }
}