Category Standard Organisation Health Level Seven (HL7) Type Standard Version 1 Access Open Status Active This standard provides support with specifications for: the composite HL7 Version 3 message, protocols for reliable message delivery, generic ‘Communication Roles’ that support the modes of HL7 messaging, and message control events that describe a framework for generic HL7 messaging. Access HL7 Version 3 Standard: Infrastructure Management - R1 By accessing this content, you are leaving this website. The Agency takes no responsibility for the accuracy of content on the destination page.