I have now been reading a lot about codesytems and valuesets in fhir, but still don’t know how to use them in one specific context of my application. Let me explain:
In my application I want to make use of a fhir based terminology services for managing valuesets and codesystems. Many of theses valuesets or codesystems are either defined by my organization or official sources (LOINC etc.) and imported to this terminology service by my application during installation/update procedure.
However, there are also codesystems where the concepts are defined by the customers of my application! E.g. think of the Practitioner Role code, where my customers do not accept a standard codesystem, but want to manage the codes on their own.
In my application there is a user interface for managing practitioner roles. Now my question: How should I define the reference to the corresponding valueset? Or is there a way to define a valueset that includes a relative URL to a codesystem?
In the specifications I only see absolute and globally uniques URLs, where I do not see a way to use them.
I hope my issue became clear and some of you have an idea how to manage it.