Health Device Data Transfer
Version 1.0.0-rc2 - release

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

: HDDT Blood Pressure Value Example - JSON Representation

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{
  "resourceType" : "Observation",
  "id" : "example-blood-pressure-value",
  "meta" : {
    "profile" : [
      🔗 "https://gematik.de/fhir/hddt/StructureDefinition/hddt-blood-pressure-value"
    ]
  },
  "status" : "final",
  "category" : [
    {
      "coding" : [
        {
          "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
          "code" : "vital-signs"
        }
      ]
    }
  ],
  "code" : {
    "coding" : [
      {
        "system" : "http://loinc.org",
        "code" : "85354-9",
        "display" : "Blood pressure panel with all children optional"
      }
    ]
  },
  "subject" : {
    🔗 "reference" : "Patient/patientExample"
  },
  "effectiveDateTime" : "2025-10-23T09:15:00+02:00",
  "interpretation" : [
    {
      "coding" : [
        {
          "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
          "code" : "N",
          "display" : "Normal"
        }
      ]
    }
  ],
  "device" : {
    🔗 "reference" : "Device/example-device-blood-pressure-cuff"
  },
  "component" : [
    {
      "code" : {
        "coding" : [
          {
            "system" : "http://loinc.org",
            "code" : "8480-6",
            "display" : "Systolic blood pressure"
          }
        ]
      },
      "valueQuantity" : {
        "value" : 120,
        "unit" : "mm[Hg]",
        "system" : "http://unitsofmeasure.org",
        "code" : "mm[Hg]"
      }
    },
    {
      "code" : {
        "coding" : [
          {
            "system" : "http://loinc.org",
            "code" : "8462-4",
            "display" : "Diastolic blood pressure"
          }
        ]
      },
      "valueQuantity" : {
        "value" : 80,
        "unit" : "mm[Hg]",
        "system" : "http://unitsofmeasure.org",
        "code" : "mm[Hg]"
      }
    },
    {
      "code" : {
        "coding" : [
          {
            "system" : "http://loinc.org",
            "code" : "8478-0",
            "display" : "Mean blood pressure"
          }
        ]
      },
      "valueQuantity" : {
        "value" : 93,
        "unit" : "mm[Hg]",
        "system" : "http://unitsofmeasure.org",
        "code" : "mm[Hg]"
      }
    }
  ]
}