Union of http://hl7.org/fhir/ValueSet/route-codes and https://fhir.infoway-inforoute.ca/ValueSet/routeofadministration

This is the ValueSet that contains all the codes in SNOMED CT Route Codes (http://hl7.org/fhir/ValueSet/route-codes) and RouteOfAdministration (https://fhir.infoway-inforoute.ca/ValueSet/routeofadministration). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem