vRead
You can also include a version string in the URL in order to request a specific version of the resource by performing a vRead operation. The vRead uses an HTTP GET against the URL [baseUrl]/[resourceType]/[id]/_history/[versionId].
The following example shows a simple vRead of the original resource created in Create.
Request: FHIR vRead operation
Response: FHIR vRead operation
The FHIR endpoint responds with a response similar to the following:
Parent topic: FHIR CRUD (Create/Read/Update/Delete) operations