MOTION: In V2.9 Use the ARV as a manifest after the MSH as an optional repeating segment: Additional ARV segments already defined will remain. It will specify the segment by name and occurrence.
The ARV segment has added two fields to handle confidentiality and handling. This will allow the processor to know at the beginning of the message which segments will require special processing. In order to identify the HL7 elements that the defined security and privacy tag rules apply to, we will add one more field - discussion is about the best way to unambiguously do that - current proposal is to use the ERL datatype.
Here is the Chapter 3 CR we reviewed on the call: