Implementation Guide
Health Device Data Transfer
Version 0.1.0 - ballot

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

: HDDT Blood Glucose Obervation Example (general) - JSON Representation

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{
  "resourceType" : "Observation",
  "id" : "example-blood-glucose",
  "meta" : {
    "profile" : [
      🔗 "https://gematik.de/fhir/hddt/StructureDefinition/hddt-blood-glucose-measurement"
    ]
  },
  "status" : "final",
  "code" : {
    "coding" : [
      {
        "system" : "http://loinc.org",
        "code" : "2339-0",
        "display" : "Glucose [Mass/volume] in Blood"
      }
    ]
  },
  "effectiveDateTime" : "2025-10-23T08:30:00Z",
  "valueQuantity" : {
    "value" : 30,
    "comparator" : "<",
    "unit" : "mg/dl",
    "system" : "http://unitsofmeasure.org",
    "code" : "mg/dL"
  },
  "device" : {
    🔗 "reference" : "DeviceMetric/example-glucometer-metric"
  }
}