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Source1

{
  "resourceType": "Observation",
  "id": "observation-blood-pressure-example",
  "meta": {
    "profile": [
      "https://hl7.lt/fhir/base/StructureDefinition/observation-lt"
    ]
  },
  "language": "en",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "status": "preliminary",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "vital-signs",
          "display": "Vital Signs"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "85354-9",
        "display": "Blood pressure panel with all children optional"
      }
    ]
  },
  "subject": {
    "reference": "Patient/patient-example"
  },
  "encounter": {
    "reference": "Encounter/encounter-psychiatric-example"
  },
  "effectiveDateTime": "2025-08-01T10:00:00Z",
  "issued": "2025-08-01T10:01:00Z",
  "performer": [
    {
      "reference": "Practitioner/practitioner-example"
    }
  ],
  "valueString": "Blood pressure within normal  limits",
  "interpretation": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
          "code": "N",
          "display": "Normal"
        }
      ]
    }
  ],
  "note": [
    {
      "text": "Patient was calm and seated for 5 minutes before measurement."
    }
  ],
  "referenceRange": [
    {
      "low": {
        "value": 90,
        "unit": "mmHg"
      },
      "high": {
        "value": 120,
        "unit": "mmHg"
      },
      "type": {
        "coding": [
          {
            "system": "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
            "code": "normal",
            "display": "Normal Range"
          }
        ]
      },
      "text": "Normal systolic blood pressure for adults"
    }
  ],
  "component": [
    {
      "code": {
        "coding": [
          {
            "system": "http://loinc.org",
            "code": "8480-6",
            "display": "Systolic blood pressure"
          }
        ]
      },
      "valueQuantity": {
        "value": 117,
        "unit": "mmHg",
        "system": "http://unitsofmeasure.org",
        "code": "mm[Hg]"
      },
      "interpretation": [
        {
          "coding": [
            {
              "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
              "code": "N",
              "display": "Normal"
            }
          ]
        }
      ]
    },
    {
      "code": {
        "coding": [
          {
            "system": "http://loinc.org",
            "code": "8462-4",
            "display": "Diastolic blood pressure"
          }
        ]
      },
      "valueQuantity": {
        "value": 78,
        "unit": "mmHg",
        "system": "http://unitsofmeasure.org",
        "code": "mm[Hg]"
      },
      "interpretation": [
        {
          "coding": [
            {
              "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
              "code": "N",
              "display": "Normal"
            }
          ]
        }
      ]
    }
  ]
}