Where and how this is used is very unclear, but it seems you are capturing the canonical url for the US Edition of SNOMED CT. You have that as a "version" but the structure is a FHIR canonical url. I suspect you want to set the specific SCT edition to be used - good idea. I'd rather we do that using something Bryn Rhodes has crafted that aligns with the eCQM "Binding Parameters Specification" which uses a library of type asset-collection. See http://build.fhir.org/ig/HL7/cqf-measures/measure-terminology-service.html for capabilities associated, and then http://build.fhir.org/ig/HL7/cqf-measures/StructureDefinition-quality-program-cqfm.html for an instance of the library.