<status value="active"/> <experimental value="false"/> <date value="2019-03-20T00:00:00-04:00"/> <publisher value="TBD - External Body"/> <contact> <name value="The Internet Engineering Task Force (IETF)"/> </contact> <description value="Older value from OID registry. Superceded; see recommendations in BCP-47."/> <content value="not-present"/> </CodeSystem>

This code system urn:ietf:bcp:47 defines many codes, but they are not represented here