Your best bet would be the HL7 Reference Information Model (RIM) available as part of the HL7 v3 standards. It makes sense to use the RIM as the starting point since a lot of work has been done to define popular concepts such as patient, encounter, medication, observation... The RIM is designed to accomodate information elements that are ...

First, let me say I wholeheartedly applaud Microsoft's efforts on NHIN and with CHF. We have to start somewhere. I represent the small software developer who is trying to develop and market a new front-end product for the healthcare market with some ideas that have been piloted in a few places. What has led me to despair in the past is ...