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Source1

{
  "resourceType": "Observation",
  "id": "Tobacco-item-example-88029-4",
  "meta": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/StructureDefinition/instance-name",
        "valueString": "Tobacco Item Example 88029-4"
      },
      {
        "url": "http://hl7.org/fhir/StructureDefinition/instance-description",
        "valueMarkdown": "This is a Tobacco Item Example 88029-4 (Tobacco use duration) for the *US Core Observation Screening Assessment Profile*"
      }
    ],
    "profile": [
      "http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-screening-assessment"
    ]
  },
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "survey",
          "display": "Survey"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "88029-4",
        "display": "Tobacco use duration"
      }
    ],
    "text": "Tobacco use duration"
  },
  "subject": {
    "reference": "Patient/example"
  },
  "effectiveDateTime": "2026-05-21T03:32:19.408Z",
  "performer": [
    {
      "reference": "Practitioner/practitioner-1"
    }
  ],
  "valueQuantity": {
    "value": 10,
    "unit": "a",
    "system": "http://unitsofmeasure.org",
    "code": "a"
  },
  "note": [
    {
      "text": "Amount of time (e.g. years) the patient has used smoking or smokeless tobacco products"
    }
  ],
  "derivedFrom": [
    {
      "reference": "QuestionnaireResponse/5497959",
      "display": "Tobacco Use Panel QuestionnaireResponse Example"
    }
  ]
}