cargo / hl7-3

HL7® v3 for Rust: the Reference Information Model (RIM) backbone classes, the data types they're built from (identifiers, coded values, intervals, quantities, encapsulated data, explicit null), and the three-level message envelope (transport wrapper, control act wrapper, domain payload). A foundation, not a full implementation — see spec/index.md for exact scope. HL7®, and FHIR® are the registered trademarks of Health Level Seven International and their use of these trademarks does not constitute an endorsement by HL7. This project is an independent work.