There is a great article explaining the difference between EHRs and EMRs in Healthcare Informatics from October 2005. While it includes very technical definitions, I like the simple overview of the difference they provide --
"EMRs are computerized legal clinical records created in CDOs, such as hospitals and physician offices. EHRs represent the ability to easily share medical information among stakeholders and to allow it to follow the patient through various modalities of care from different CDOs."
Thanks Ron for sending this article to me! It fits in well with one of my prior post.
Oh, and the reference to fruit cocktail, means the terms are not interchangeable!