{

"resourceType": "SearchParameter",
"id": "patient-extensions-Patient-age",
"url": "http://hl7.org/fhir/SearchParameter/patient-extensions-Patient-age",
"version": "4.0.1",
"name": "age",
"status": "draft",
"experimental": true,
"description": "Searches for patients based on age as calculated based on current date and date of birth.  Deceased patients are excluded from the search.",
"code": "age",
"base": [
  "Patient"
],
"type": "number",
"xpath": "f:Patient/f:birthDate",
"xpathUsage": "normal"

}