Unballoted STU Update Publication of HL7 FHIR® Implementation Guide: Consumer Directed Payer Data Exchange (CARIN IG for Blue Button®), Release 1 STU 2.1 – US Realm
Learn more at https://www.hl7.org/implement/standards/product_brief.cfm?product_id=547 or see the specification at http://hl7.org/fhir/us/carin-bb/STU2.1