{description: Returns patients with an ethnicity extension matching the specified code., package_name: hl7.fhir.us.core, name: USCoreEthnicity, type: token, package_version: 4.0.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/core/SearchParameter/us-core-ethnicity', version: 4.0.0}