This code system https://fhir.ehealth-systems.at/artifacts/PlanDefinition/tag provides a fragment that includes following code:

CodeDisplayDefinition
default Default treatment planA default treatment plan, that should be preselected and eventually applied when registering new patients.
 <status value="active"/> <date value="2024-04-27T13:32:49+00:00"/> <contact> <name value="AIT Austrian Institute of Technology"/> <telecom> <system value="email"/> <value value="mailto:office@ait.ac.at"/> </telecom> </contact> <description value="Meta data tags of standard treatment plans."/> <compositional value="true"/> <content value="fragment"/> <concept> <code value="default"/> <display value="Default treatment plan"/> <definition value="A default treatment plan, that should be preselected and eventually applied when registering new patients."/> </concept> </CodeSystem>