An Electronic Health Record (EHR) extends the notion of an Electronic Medical Record to include the concept of cross-institutional data sharing. Thus an EHR contains data from a subset of each institution’s EMR (that is agreed upon by the institution). An EHR may also reside “entirely within one institution” and link the various affiliated practice sites together. The EHR is generally patient-focused and spans episodes of care rather than a single encounter. Excerpt from Rupasi S. Lloyd, Accepting the Inevitable: Trends, Expected Outcomes, and what to Look for as Electronic Health Record Implementation Goes Forward, 5 Teaching Hospitals & Academic Medical Centers 1, 11 (January 2007).
EHRs are designed to move with the patient—to the specialist, the hospital, the nursing home, the next state, or even across the country.
From U.S. Department of Health and Human Services, http://www.healthit.gov/buzz-blog/electronic-health-and-medical-records/emr-vs-ehr-difference/.