STU Publication of the HL7 FHIR® R4 Implementation Guide: Electronic Long-Term Services and Supports (eLTSS) Edition 1 STU2 – US Realm
Learn more at https://www.hl7.org/implement/standards/product_brief.cfm?product_id=505 or see the specification at http://hl7.org/fhir/us/eltss/STU2