On April 28, 2008, the National Alliance for Health Information Technology released its Report, "Defining Key Health Information Technology Terms," to the Office of the National Coordinator for Health Information Technology.
The report is an effort to get everyone working in health information technology to have a common understanding of and differences between EMRs, EHRs, PHRs, HIEs, HIOs and RHIOs. If you don't know what each of these are or are interested in better understanding these key health tech terms check out the report.
An article by Health Data Management indicates that the Report will be "presented on June 3 to the American Health Information Community, a Department of Health and Human Services advisory body, for final approval."