Several ValueSets are not available at their canonical URL (e.g., CVC published value sets) or on the terminology servers used in implementation guide publication (i.e., tx.fhir.org). Primarily, this impacts validation against Canada Health Infoway-hosted ValueSets during the development of derived Implementation Guides. This does not affect deployed systems as these instances will be validated against loaded terminology. For several of these ValueSets, "stub" resources have been created to stand-in for the unresolvable ValueSets. These stub ValueSets include pointers to the locations where the full value sets can be downloaded. Current guidance is to manually download the value sets from, for example, the Terminology Gateway or Canadian Vaccine Catalogue. When terminology is not readily available as FHIR® Release 4 ValueSets or CodeSystems, implementers should work with terminology producers to identify options.

Proposed Pan-Canadian Value Sets

These are value sets that are proposed by the Ontario Patient Summary as the national standardized terminologies that implementers are encouraged to align to. SNOMED CT Canadian Edition (SNOMED CT-CA) is the terminology generally recommended for use in Canada, but in some cases the Ontario Patient Summary will also propose the use of other terminologies (e.g., CVC, CCDD, etc.) that have widespread adoption across Canada.