What Scenarios, Standards For Messaging Are Necessary To Support The Computer-Based Interactions Between

Please click on the following hyperlink and let’s discuss how Messaging standards such as Health Level Seven (HL7) enable one computer-based system to process the meaning of a message sent from a different computer-based system (i.e., semantic interoperability) by specifying an agreed-upon structure and semantics (Health Level 7, 2001). For example, what scenarios, standards for messaging are necessary to support the computer-based interactions between a home healthcare RN and the pharmacy and between the RN and the home health agency?
http://www.nahq.org/journal/Article/jhq-148.html