Attendance can be found Here
Co-Chair and Key Participant information can be found on the Agenda found Here
|3:30||Meeting started||Jim Case|
The attendance recording mechanism was explained
|3:35||Value Set Expansioin Project||Rob McClure|
The group have been working to finish up comment reconcilliation of VSD ballot or FHIR ballot so there has not been a VSE meeting for several months.
Currently looking at FHIR process harmonisaiton and value set expansion and binding semantics concern that we have not been focusing on the right things.
Question: is the intetion of VSE to be on a local level or to be more 'standardised'. Yes, the content logical definition, where it is logically expandable that (with some caveates) the result would produce the same outcome.
FHIR Definition of expansions is a possible focus for a profile to clarify how VSE is required for best practice in FHIR expansion definitions.
FHIR has always wanted a lot of flexibilty in the kind of informaiton which is in an expansion and how closely that is aligned with the code system with which it is associated.
FHIR publishes the definition with the expansion and may or may not include relevant to codes/definitions etc. There are quesitons about when you have a definition in the expansion but there are different instance ids but the canonical id is the same are they the same?
Anything which is a value set will show up in an expansion.
In addition to the code, codesystem version, the definition of the concept could also be included
The meeting reviewed the FHIR Operation $expand on ValueSet issues:
When an intensional definition is used to generate an expansion, the message should include the intensional definition and the result of applying that process. However the lawyers will not support publicaton of intensional definitions of vendor property (this is not a problem in areas of the world but it is a real issue in the USA)
As there is an aknowledged need to change due to ambiguity and multiple interpretations of status. It was agreed that the status quo is not acceptable. Invariant 11 is not acceptable.
As we therefore need to go back to ballot we have two options:
It was agreed that the suggested solution be discussed with FHIR management and further discussed tomorrow.
Robert Hausam to discuss with Grahame Grieve and report back to Vocabulary in Q3 on Tuesday