In just eight months, Medicare will require ordering providers to consult appropriate use criteria (AUC) via an electronic clinical decision support (CDS) tool when ordering outpatient advanced imaging exams. When executed properly, CDS can facilitate more appropriate use of imaging, hardwire care standards, and reduce total cost of care. But, with few recent studies assessing the tool's impact, many health care leaders are left wondering what to expect after implementation. A recent study from Aurora Health Care sheds light on potential outcomes.