About EM Hub
EM Hub is a free, offline-capable web app for emergency physicians practicing in Ontario, Canada. It bundles three reference tools used at the point of care: OHIP billing codes, sedation and ISS (Injury Severity Score) calculators, and discharge prescription templates.
Who built this
EM Hub is created and curated by Dr. Alvin Yang, MD, an emergency physician based in Ontario, Canada. The tool exists because the OHIP Schedule of Benefits is long, dense, and awkward to search mid-shift; EM Hub distils the codes used in the emergency department into a fast, searchable reference.
Data sources
- Billing codes: derived from the Ontario Ministry of Health Schedule of Benefits for Physician Services (the source of truth for OHIP billing). Codes, fees, premiums, and modifier rules are transcribed from the official document.
- Diagnostic codes: the OHIP diagnostic codes published by the Ministry of Health.
- Prescriptions: a curated set of approximately 400 medications commonly prescribed at ED discharge, with weight-based dosing for paediatrics. Not an exhaustive pharmacopeia.
- Calculators: sedation and ISS calculators are built from standard published criteria (e.g., ASA classification, ISS body region scoring).
Review process
The billing dataset is reviewed periodically by Dr. Yang as the Schedule of Benefits is updated and as feedback comes in from users. The "last reviewed" date shown on each code page reflects the most recent commit to the billing dataset (dataset-level, not per-code). Individual code entries are revised in batches when the underlying OHIP rules change.
Limitations and disclaimer
- EM Hub is a reference for physicians, not a billing-submission system or a clinical decision-support tool.
- It is not a substitute for clinical judgment or for the authoritative OHIP Schedule of Benefits. Always verify codes, fees, and modifier eligibility against the official Schedule before submitting claims.
- The prescription module does not check for patient allergies, drug interactions, or safety in pregnancy and lactation. The prescriber is responsible for verifying indications, doses, and any required renal or hepatic adjustments.
- Content may be incomplete or out of date. Report errors via the feedback button on the main app.
- EM Hub stores no patient data. Provider details (your name, CPSO, location) are stored locally on your device only.
Feedback
Use the "Submit Feedback" button accessible from the menu on the main app to report errors, suggest codes to add, or request features.