electronic health record (EHR) a computerized repository for a patient's health information providing information to members of the health care team regarding a clinical encounter. Many systems can also provide decision support, quality assurance information and outcome data. electronic health record Abbreviation: EHR Electronic medical record. electronic medical record Abbreviation: EMR. A computerized database that typically includes demographic, past medical and surgical, preventive, laboratory and radiographic, and drug information about a patient. It is the repository for active notations about a patient's health.