EHR Simulator

A hands-on electronic health record you can explore in the browser.

Screenshot of the EHR Simulator, showing a patient record, coded problem list, and clinical decision-support alerts

Launch the EHR Simulator ↗
Opens in a new tab. No login or installation required.

The EHR Simulator is an interactive, browser-based electronic health record built for teaching. It lets you work with a realistic patient record and the standards and workflows that underpin real clinical systems, with nothing to install and no account to create.

Within the simulator you can:

  • Clinical terminologies: SNOMED CT, LOINC, RxNorm, and ICD-10 coding applied to a live patient record.
  • FHIR R4: inspect the record as a FHIR R4 resource bundle.
  • HL7 v2 messaging: see how clinical events are encoded as HL7 v2 messages.
  • Order sets and risk calculators: place orders and run common bedside risk scores.
  • Decision support: CDS Hooks-style alerts fire as you work, illustrating real-time clinical decision support.

It is best used alongside the textbook: open it in a second tab, follow the discussion in the EHR chapter, and try each concept on the live record as you read.

Companion to: Chapter 2: Electronic Health Records

Launch the EHR Simulator ↗
Opens in a new tab. No login or installation required.