An electronic health record (EHR) is a longitudinal digital record of a patient’s health information maintained across care episodes and, increasingly, across providers. It consolidates demographics, diagnoses, medications, results and clinical notes into a structured, queryable store that supports care delivery, decision support and analytics. EHRs depend on interoperability standards and strong privacy controls to be shared safely between systems.

Overview

  • EHRs replaced fragmented paper charts with structured, queryable stores that follow the patient across time and, ideally, across providers.
  • Their value grows with interoperability: standardised data models and exchange formats let records flow safely between clinics, hospitals and patient-facing applications.
  • Because the data is highly sensitive, EHRs carry strong access-control, audit and privacy obligations alongside their clinical function.

Key aspects

  • Structured clinical data: demographics, problems, medications, allergies, results.
  • Interoperability via standards such as HL7 FHIR.
  • Privacy and security controls, including audit trails and consent management.
  • Foundation for analytics, AI decision support and population health.

Applications

  • Care coordination across providers and settings.
  • Clinical decision support and alerting.
  • Telemedicine and remote monitoring integration.
  • Secondary use for research and quality improvement under governance.

Provenance