Terminology
ValueSets can define codes using complex rules based on hierarchy or filtering, rather than simple inclusion from CodeSystems. To determine which codes are included in a ValueSet, the
$expand operation is used.This operation resolves all the defined rules in a ValueSet and generates an expansion, which is a list of codes extracted from the associated CodeSystems.
To see the response from the Kodjin FHIR Server, select a ValueSet from the list and perform the $expandoperation. You can also apply additional filters to restrict the results. For example, you can try searching for codes that start with A0.