{description: Searches for patients based on age as calculated based on current date and date of birth.  Deceased patients are excluded from the search., package_name: hl7.fhir.r4b.core, name: age, type: number, package_version: 4.3.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/patient-extensions-Patient-age', version: 4.3.0}