- HL7 V3 is the standard of choice for countries and their initiatives to create national EHR and EHR data exchange standards as it provides a level of semantic interoperability unavailable with previous versions and other standards. Significant V3 national implementations exist in many countries, e.g. in the UK (e.g. the English NHS), the Netherlands, Canada, Mexico, Germany and Croatia. Within the US, jurisdictional agencies needing support for large scale integration (e.g. CDC, FDA) have adopted V3.
We are sceptical that there are significant 'national implementations' of V3 which would justify the claim that it is the EHR 'standard of choice' in the other countries mentioned. In particular, none of the countries mentioned is using the "functional specifications" for EHR under development within the V3 framework (which may have something to do with the fact that the specifications in question were designed with the rather special case of the USA in mind).