This example demonstrates using the bodystructure resource to identify a fetus within systems that choose not to treat a fetus as a Patient

{
  "resourceType" : "BodyStructure",
  "id" : "fetus",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: BodyStructure</b><a name=\"fetus\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource BodyStructure &quot;fetus&quot; </p></div><p><b>identifier</b>: id:\u00a012345</p><h3>IncludedStructures</h3><table class=\"grid\"><tr><td>-</td><td><b>Structure</b></td></tr><tr><td>*</td><td>Fetus <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#83418008 &quot;Entire fetus (body structure)&quot;)</span></td></tr></table><p><b>description</b>: EDD 1/1/2017 confirmation by LMP</p><p><b>patient</b>: <a href=\"patient-example.html\">Patient/example</a> &quot;Peter CHALMERS&quot;</p></div>"
  },
  "identifier" : [{
    "system" : "http://goodhealth.org/bodystructure/identifiers",
    "value" : "12345"
  }],
  "includedStructure" : [{
    "structure" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "83418008",
        "display" : "Entire fetus (body structure)"
      }],
      "text" : "Fetus"
    }
  }],
  "description" : "EDD 1/1/2017 confirmation by LMP",
  "patient" : {
    "reference" : "Patient/example"
  }
}