The goal of this step-wedge trial is to test the implementation of daily nurse screening for delirium in routine care and its impact on outcomes and complications in hospitalized older adults admitted to 6 general medicine/surgery units at 3 hospitals in Pennsylvania and Massachusetts. The main question\[s\] it aims to answer are: * 1\. To test the fidelity, accuracy, and durability of implementing daily nurse screening for delirium using the UB-CAM in routine care. * 2\. To evaluate the impact of UB-CAM delirium screening on patient and care partner centered outcomes assessed at one month follow-up interviews 3. To evaluate the impact of UB-CAM screening on rates of delirium complications (falls, pressure injury, aspiration) and adverse delirium management (psychoactive medication use, restraint use). Participants (patients) will be assessed for delirium on study days 1, 2 and 3 (or until hospital discharge) and will be asked basic demographics. These patients will be contacted by phone 1 month after enrollment to collect information about inpatient facility use and to administer the Delirium Burden Patient Scale. Participants (care partners) will be interviewed at the patient's discharge to complete the Alzheimer's Disease-8 scale. These care partners will be contacted by phone 1 month after enrollment to complete the Delirium Burden Caregiver Scale and to complete a Qualitative Interview which includes questions about communication and collaboration.