RecruitingBehavioural interventionTargeted EHR-based Communication of Diagnostic Uncertainty in the EDThe goal of the clinical trial is to evaluate the preliminary effectiveness and the implementation feasibility of the Targeted EHR-based Communication about Uncertainty (TECU) strategy in improving the quality of care transitions from the emergency department (ED) to home. The overall specific aims related to the trial are to test the preliminary effectiveness of TECU compared to standard of care in reducing patient uncertainty and return ED visits and evaluate the adoption of TECU, exploring patient and clinician barriers and facilitators to TECU implementation.