FHIR Search operations

This section describes the FHIR Search operations.

• Basic searching: Finding patients
  The most basic form of a search is a search with no parameters, which matches all resources of a given type. You can also search with a name parameter or multiple parameters.
• References: Finding encounters
  Patients often have one or more encounters. You can search for all encounter resources for a specific patient using the subject search parameter.
• Quantities: Finding laboratory values
  There are a few options to search Observation resources for lab tests. You can search for all lab tests or specific lab tests for all patients or a specific patient.
• Dates and times: Narrowing your search
  Searching by date in FHIR is quite powerful. If you want to search for anything matching a date, you can use that date as the search parameter value.
• Paging search results
  When returning search results, the server pages them by default.
• Sorting search results
  FHIR makes it easy to sort the results of your search query according to whatever criteria you require. Add the _sort parameter followed by the name of a search parameter.
• Full text searching
  You can perform a full text search across the textual contents of resources. Using the _content parameter, the various textual fields in resources are matched.
• Patient search $everything
  Oracle FHIR provides a special query known as the $everything operation, which returns all resources associated with a specific patient. The query searches the patient's entire chart.