Outpatient management of uncomplicated left-sided diverticulitis significantly reduces length of stay without increasing readmissions.

• Length of stay in the outpatient group was 29.7 hours shorter than inpatient care (p < 0.001).
• Co-morbid patients (ASA 3 and 4) faced a stay increase of 17 hours (53 hours vs. 35 hours, p < 0.001).

Consider implementing an outpatient protocol to optimize resource use while ensuring patient safety.

• High comorbidity patients with CCI score ≥ 5 had a stay increase of 32 hours (67 hours vs. 35 hours, p < 0.001).