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.
Request: Search query for patient using search $everything
To invoke this operation on a specific patient, call $everything on a patient resource instance. For example:

Request: Search query for patient using search $everything by count
The result of this operation can be paged in order to avoid overwhelming the client and server. You can use the _count parameter and increase the page size from the resulting bundle.

Parent topic: FHIR Search operations