<status value="active"/> <experimental value="false"/> <date value="2019-12-01"/> <publisher value="HL7, Inc"/> <contact> <telecom> <system value="url"/> <value value="https://github.com/HL7/UTG"/> </telecom> </contact> <description value="Value Set of codes that identifies a country of origin for a message. It will be used primarily to specify default elements, such as currency denominations. The values to be used are those of ISO 3166. The ISO 3166 table has three separate forms for the codes for each country, this value set includes only the 3-character alpha form."/> <copyright value="Copyright HL7. Licensed under creative commons public domain"/> <compose> <include> <system value="urn:iso:std:iso:3166"/> <filter> <property value="code"/> <op value="regex"/> <value value="[A-Z]{3}"/> </filter> </include> </compose> </ValueSet>

Include codes from urn:iso:std:iso:3166 where code matches (by regex) [A-Z]{3}