contextIdentifier
Specifies the evaluation context for a retrieve expression. When present, the retrieve is scoped to the specified context, such as a Patient or Practitioner, before the arrow operator narrows to the named type.
Examples
Explicit Patient context in a retrieve
[Patient -> Condition: "Diabetes Mellitus"]
Practitioner context in a retrieve
[Practitioner -> Encounter: "Outpatient"]
EBNF
contextIdentifier : qualifiedIdentifierExpression ;