Rational Physician Coding for ER E/M Services Learn how to quantify your medical decision-making and select the "correct" level of care for E/M services provided in the emergency department. Then see exactly what's needed to ensure compliance and streamline the documentation process. This program takes you step-by-step through all levels of care for ER E/M services. The rules for documenting and coding for critical care in the ER are also discussed.