<SearchParameter xmlns="http://hl7.org/fhir">
  <id value="ca-on-mi-sp-imagingstudy-category" />
  <url value="http://ontariohealth.ca/fhir/SearchParameter/ca-on-mi-sp-imagingstudy-category" />
  <name value="ImagingStudyCategorySearchParameter" />
  <status value="active" />
  <description value="Supports search by the value of the imagingstudy category" />
  <code value="category" />
  <base value="ImagingStudy" />
  <type value="token" />
  <expression value="ImagingStudy.extension.where(url='http://ontariohealth.ca/fhir/StructureDefinition/ext-mi-imagingstudy-category').extension.valueCodeableConcept" />
  <multipleAnd value="true" />
</SearchParameter>