Watch that running this statement on any unix or mac command line will result in the dollar sign being interpreted as a variable (which probably doesn't exist!) and the URL will break at that point. Change the " to ' to avoid this.
curl --location --request GET "https://ontoserver.csiro.au/stu3-latest/ValueSet/$expand?url=http%253A%252F%252Fsnomed.info%252Fsct%252F32506021000036107%252Fversion%252F20160630%253Ffhir_vs%253Drefset%252F929360061000036106&_format=xml"
How can I find out which value sets contain a given concept?
See Section 18.104.22.168 of the FHIR Specification - "Searching for codes in Value Sets" - at http://hl7.org/fhir/valueset.html. In the case of SNOMED CT, this would exclude any implicit FHIR Value Set that contains an edition and version of the Code System in its entirety.
How can I find out which reference sets contain a given concept?
Could reference set membership be a property of the code?
In ConceptMap translate what is the difference between system and source/target?
Source and Target are Valuesets and System is the CodeSystem of the code being looked up.
Do I need a CodeSystem resource in order to implement a SNOMED CT ValueSet?
This question came up in relation to an implementer using the Global Patient Set (GPS) in a non-member country. The Code System Resource is required to ensure interoperability between licensed and non-licensed sites. In the later case, using the GPS, the Code System Content Mode should be set to fragment, to indicate that only a subset of the contents of the full Code System are included. However, the Code System URL of that fragment should still be http://snomed.info/sct.
Watch out for a URL for the Expand operation that contains an additional question mark (e.g. implicit Value Set syntax)