Predicting which patients with dialysis-requiring acute kidney injury (AKI-D) will recover and discontinue dialysis therapy is a common clinical challenge. Because chronic kidney disease is a risk factor for AKI-D1-3 and 60% to 70% of maintenance dialysis patients initiate dialysis therapy in the hospital,4,5 there is substantial potential for misclassifying AKI-D as ESRD, which may be detrimental to patient well-being and may falsely inflate estimates of national ESRD incidence. Another reason patients with AKI-D may be misclassified as having ESRD is more practical: to facilitate access to outpatient dialysis treatments after hospital discharge.