Utilizing a Step-Wedge design, this randomized controlled trial (RCT) will be conducted at 10 Cleveland Clinic hospitals in efforts to assess the effects of a VTE (venous thromboembolism) risk calculator embedded in the admission order set vs. usual care on physician behavior and patient outcomes. Hospitals will be randomized to display the risk calculator to physicians admitting patients or to the usual order set that contains only a description of VTE risk factors. The risk calculator will produce a predicted risk of VTE together with a recommendation regarding the use of prophylaxis for an individual patient. Physicians will be free to ignore the calculator or override its results if they so choose.