This example demonstrates using the bodystructure resource to identify skin patches or other portions of a person or animal that are a focus of a clinical trial and that are subject to repeated observations and/or procedures over time

{
  "resourceType" : "BodyStructure",
  "id" : "skin-patch",
  "identifier" : [{
    "system" : "http://goodhealth.org/bodystructure/identifiers",
    "value" : "12345"
  }],
  "active" : false,
  "includedStructure" : [{
    "structure" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "14975008",
        "display" : "Forearm"
      }],
      "text" : "Forearm"
    },
    "laterality" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "419161000",
        "display" : "Unilateral left"
      }],
      "text" : "Left"
    },
    "bodyLandmarkOrientation" : [{
      "landmarkDescription" : [{
        "text" : "heart tattoo"
      }],
      "distanceFromLandmark" : [{
        "value" : [{
          "value" : 2.0,
          "unit" : "cm",
          "system" : "http://unitsofmeasure.org",
          "code" : "cm"
        }]
      }],
      "surfaceOrientation" : [{
        "coding" : [{
          "system" : "http://snomed.info/sct",
          "code" : "46053002",
          "display" : "distal"
        }]
      }]
    }],
    "qualifier" : [{
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "263929005",
        "display" : "Volar"
      }],
      "text" : "Volar"
    }]
  }],
  "description" : "inner surface (volar) of the left forearm",
  "patient" : {
    "reference" : "Patient/example"
  }
}