FQL is a query language that allows you to retrieve, filter and project data from any data source containing FHIR Resources. It brings the power of three existing languages together: SQL, JSON and FhirPath. It allows you to create tables and is useful for gaining insight and perform quality control.
This code system http://hl7.org/fhir/v3/SubstitutionCondition defines the following codes:
Properties
Code | URL | Description | Type |
notSelectable | http://hl7.org/fhir/concept-properties#notSelectable | Indicates that the code is abstract - only intended to be used as a selector for other concepts | Boolean |