Details
-
Change Request
-
Resolution: Persuasive
-
Medium
-
FHIR Core (FHIR)
-
STU3
-
Terminology Infrastructure
-
ValueSet
-
(NA)
-
-
Rob McClure/Rob Hausam: 9-0-0
-
Enhancement
-
Non-substantive
-
R5
Description
The SNOMED CT Expression Syntax says:
descendantOf = "<"
descendantOrSelfOf = "<<"
I think FHIR descendent-of is exactly matching <, while FHIR is-a is exactly matching <<. That must mean that the FHIR SNOMED CT page is missing support for descendent-of.
I noticed in STU3, but that omission is still true in the current build.
http://hl7.org/fhir/STU3/valueset-filter-operator.html
https://confluence.ihtsdotools.org/pages/viewpage.action?pageId=28739405
Request to add support for descendent-of in SNOMED CT related value sets. I can see how constraint could support the use case, but constraint is a whole lot more powerful and harder to implement.