T he coronavirus disease 2019 (COVID-19) pandemic has highlighted just how precious of a resource the intensive care unit (ICU) bed is across the world. 1 Hospitals, which typically functioned near capacity pre-COVID-19, were outpaced by the pandemic. 2 COVID-19 persists and systems originally built for pre-COVID capacity are forced to adapt until new units and hospital wings can be developed. 2 Given this, it is imperative, now more than ever that, we learn to optimally use our most valuable resource, the critical care ward. While other specialties such as trauma have defined, monitored, and reported definitions for both under and overtriage, we lack a consensus definition for ICU overtriage. [3][4][5][6] It is thus imperative that we as a surgical community develop such metrics for postoperative ICU overtriage.Historically, a problem such as defining and identifying ICU overtriage would have been addressed with a scoring system or rubric. However, in the modern era, big data analytics leveraging machine learning can provide a valuable and more generalizable solution to this problem. Artificial intelligence-enabled decision support is a burgeoning field, which will fundamentally reshape how healthcare is delivered and how clinical treatment decisions are made, resulting in more data-driven approaches to healthcare and more personalized care delivery. 7,8 In the past, surgery was defined by new surgical techniques, and a shift to minimally invasive interventions; however, the future of surgery will be defined by the surgical application of artificial intelligence-enabled decision support systems and procedural automation. 9,10 Loftus et al. 11 represents an excellent early example of the use of machine learning to interpret big data to investigate a clinical and operational gap (the appropriate use of ICU beds). This study uses a previously validated MySurgeryRisk tool to predict postoperative overtriage to the ICU and estimate the cost of care associated with ICU overtriage. 12,13 MySurgeryRisk is an internally validated machine learning tool that uses electronic health record (EHR) data to generate risk predictions including hospital mortality and prolonged ICU stay. In this study, it used preoperative and intraoperative EHR data to make risk predictions at the surgery end time. Of a longitudinal cohort of postoperative ICU admissions, the authors used MySurgeryRisk to determine which patients were appropriate versus overtriaged to the ICU. They identified a risk-matched cohort of postoperative ward admissions as their control. ICU admission was defined as a patient being physically admitted to an ICU bed under either ICU or intermediate status. Appropriate ICU triage was defined as the patient having at least a 2% risk of in-hospital mortality or prolonged ICU stay based on the MySurgeryRisk tool or American Society of Anesthesiologists Physical Status classification 14 or needing immediate postoperative mechanical ventilation or vasopressor support. "Overtriage" was defined as being admitted to the ICU but no...