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PURPOSE OF THE STUDY To determine the statistical indicators aimed at identifying patients for whom ambulatory colectomy could be proposed without additional risk. PATIENTS AND METHODS The medical charts of patients who benefited from scheduled colonic or rectal resection during conventional hospitalization stays between 2018 and 2019 were reviewed. Eligibility for ambulatory colectomy was defined by hospital stay≤4 days and absence of any postoperative complication. Patient characteristics were compared, and the results were modeled in the form of a decision-making tree. The effect of an enhanced recovery after surgery (ERAS) protocol for each sub-group was calculated. RESULTS One hundred and ten (110) patients were selected (41 "eligible" and 69 "non-eligible"). Median age was 73 years (27-95). Nearly 80% of the patients were operated for cancer. In multivariate analysis, age (≥65 years, OR=3.15, CI95%=1.22-8.12), diabetes (OR=3.91, CI95%=1.03-14.8) and indication (sigmoidectomy for diverticulosis, OR=0.21, CI=95%=0.05-0.9) were the only identified independent variables. Likelihood for ambulatory eligibility was 83.3% (<65 years, sigmoidectomy pour diverticulosis, +ERAS=92%-96.9%), 58.3% (<65 years, other indication, +ERAS=63.4%-89.9%), 35.7% (≥65 years without diabetes, +ERAS=40.0%-55.9%) and 8.3% (≥65 years with diabetes, +ERAS=10.0%-20.1%). CONCLUSION Sigmoidectomy for diverticulosis in a patient under 65 years age represents the best indication for ambulatory colectomy, a procedure that must not be proposed to diabetic patients over 65 years of age. In the other cases (<65 years operated in another indication and non-diabetic≥65 years), ambulatory surgery is possible, pending satisfactory application of the ERAS protocol.