US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 8.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions

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: USCoreObservationPatient - XML Representation

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<SearchParameter xmlns="http://hl7.org/fhir">
  <id value="us-core-observation-patient"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">  <!-- <h2>SearchParameter: USCoreObservationPatient</h2>
				<b> description</b> : <p><strong>The subject that the observation is about (if patient)</strong><br />
NOTE: This SearchParameter is defined only to document Server and Client expectations. Its definition is derived from the standard FHIR SearchParameter and it uses the <a href="http://hl7.org/fhir/StructureDefinition/capabilitystatement-expectation">Conformance expectation extension</a> to define additional expectations for the following SearchParameter elements:</p>
<ul>
<li><code>multipleAnd</code></li>
<li><code>multipleOr</code></li>
<li><code>comparator</code></li>
<li><code>modifier</code></li>
<li><code>chain</code></li>
</ul>
<p>For search operations, Servers and Clients <strong>SHOULD</strong> use standard FHIR SearchParameter.</p>

			<br/> --><p><b> id</b> us-core-observation-patient</p><p><b> url</b> : <b> http://hl7.org/fhir/us/core/SearchParameter/us-core-observation-patient</b>
			</p><p><b> name</b> : USCoreObservationPatient</p><p><b> derivedFrom</b> : http://hl7.org/fhir/SearchParameter/clinical-patient</p><p><b> status</b> : active</p><p><b> date</b> : 11/17/2024</p><p><b> publisher</b> : HL7 International - Cross-Group Projects</p><p><b> contact</b> : http://www.hl7.org/Special/committees/cgp</p>  <!-- <p>
				<b> useContext</b> : </p> --><p><b> jurisdiction</b> : United States of America (the) <span> (Details : {urn:iso:std:iso:3166 code 'US' = 'United States of America', given as 'United
           States of America (the)'})</span>
			</p>  <!-- <p>
		<b> purpose</b> : Need to search by identifier for various infrastructural cases - mainly retrieving packages,
         and matching as part of a chain</p> --><p><b> code</b> : <code>patient</code>
			</p><p><b> base</b> :Observation</p><p><b> type</b> : reference</p><p><b> expression</b> : <code>Observation.subject.where(resolve() is Patient)</code>
			</p><p><b> xpath</b> : <code>f:AllergyIntolerance/f:patient|f:CarePlan/f:subject|f:CareTeam/f:subject|f:ClinicalImpression/f:subject|f:Composition/f:subject|f:Condition/f:subject|f:Consent/f:patient|f:DetectedIssue/f:patient|f:DeviceRequest/f:subject|f:DeviceUseStatement/f:subject|f:DiagnosticReport/f:subject|f:DocumentManifest/f:subject|f:DocumentReference/f:subject|f:Encounter/f:subject|f:EpisodeOfCare/f:patient|f:FamilyMemberHistory/f:patient|f:Flag/f:subject|f:Goal/f:subject|f:ImagingStudy/f:subject|f:Immunization/f:patient|f:List/f:subject|f:MedicationAdministration/f:subject|f:MedicationDispense/f:subject|f:MedicationRequest/f:subject|f:MedicationStatement/f:subject|f:NutritionOrder/f:patient|f:Observation/f:subject|f:Procedure/f:subject|f:RiskAssessment/f:subject|f:ServiceRequest/f:subject|f:SupplyDelivery/f:patient|f:VisionPrescription/f:patient</code>
			</p><p><b> xpathUsage</b> : normal</p><p><b> target</b>  Patient</p><p><b> multipleOr</b> : True   (Conformance Expectation = MAY)</p><p><b> multipleAnd</b> : True  ( Conformance Expectation = MAY)</p></div>
  </text>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="cgp"/>
  </extension>
  <url
       value="http://hl7.org/fhir/us/core/SearchParameter/us-core-observation-patient"/>
  <version value="8.0.0-ballot"/>
  <name value="USCoreObservationPatient"/>
  <derivedFrom value="http://hl7.org/fhir/SearchParameter/clinical-patient"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2024-11-17"/>
  <publisher value="HL7 International / Cross-Group Projects"/>
  <contact>
    <name value="HL7 International / Cross-Group Projects"/>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/cgp"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="cgp@lists.HL7.org"/>
    </telecom>
  </contact>
  <description
               value="**The subject that the observation is about (if patient)**  
NOTE: This SearchParameter is defined only to document Server and Client expectations. Its definition is derived from the standard FHIR SearchParameter and it uses the [Conformance expectation extension](http://hl7.org/fhir/StructureDefinition/capabilitystatement-expectation) to define additional expectations for the following SearchParameter elements:
- `multipleAnd`
- `multipleOr`
- `comparator`
- `modifier`
- `chain`

It **SHALL NOT** be used as search parameters for search. Servers and Clients **SHOULD** use the standard FHIR SearchParameter.
"/>
  <jurisdiction>
    <coding>
      <system value="urn:iso:std:iso:3166"/>
      <code value="US"/>
    </coding>
  </jurisdiction>
  <code value="patient"/>
  <base value="Observation"/>
  <type value="reference"/>
  <expression value="Observation.subject.where(resolve() is Patient)"/>
  <xpathUsage value="normal"/>
  <target value="Patient"/>
  <multipleOr value="true">
    <extension
               url="http://hl7.org/fhir/StructureDefinition/capabilitystatement-expectation">
      <valueCode value="MAY"/>
    </extension>
  </multipleOr>
  <multipleAnd value="true">
    <extension
               url="http://hl7.org/fhir/StructureDefinition/capabilitystatement-expectation">
      <valueCode value="MAY"/>
    </extension>
  </multipleAnd>
</SearchParameter>