IHE PCD Rosetta Terminology Management Vendor Terms RTM 1400 rows Harmonized Terms hRTM 440 terms ISO/IEEE 11073 Semantic Standards Vendor A Vendor B Vendor C HL7 V2 Messages HL7 V3 CDA/CCD 11073 PnP Comm Vendor Semantics IHE PCD Technical Framework Content Open consensus process Observation identifiers and co-constraints New terms incorporated into standards hRTM used for conformance testing