Implementation Guide
Health Device Data Transfer
Version 0.1.0 - ballot

Specification of health data transfer from devices to DiGA (§ 374a SGB V)

: HDDT rtCGM Incomplete Chunk Observation Example - JSON Representation

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{
  "resourceType" : "Observation",
  "id" : "example-cgm-series-incomplete",
  "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" : "2025-08-28T08:00:00Z",
    "end" : "2025-08-28T09:00:00Z"
  },
  "valueSampledData" : {
    "origin" : {
      "value" : 0,
      "unit" : "mg/dl",
      "system" : "http://unitsofmeasure.org",
      "code" : "mg/dL"
    },
    "period" : 60000,
    "dimensions" : 1,
    "data" : "110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129"
  },
  "note" : [
    {
      "text" : "Example CGM data series with 1-minute intervals over 20 minutes (20 samples), but status incomplete."
    }
  ],
  "method" : {
    "coding" : [
      {
        "system" : "http://snomed.info/sct",
        "code" : "463729000",
        "display" : "Point-of-care blood glucose continuous monitoring system (physical object)"
      }
    ]
  },
  "device" : {
    🔗 "reference" : "DeviceMetric/example-devicemetric-cgm"
  }
}