The readmission rates in patients with versus those without diabetes mellitus at an urban teaching hospital.

Objective: We examined the 30-day hospital readmission rates and their association with the admission diagnosis and the length of stay (LOS) in patients with diabetes versus those without diabetes mellitus (DM) in an urban teaching hospital.

Methods: In this retrospective study, we compared the 30-day readmission rates in patients with DM (n=16,266) versus those without DM (n=86,428) at an urban teaching hospital between January 1, 2013, and September 30, 2015. In individuals with a secondary diagnosis of DM, we analyzed the relationship between readmission rates and the ten most common Medicare Severity Diagnosis Related Groups (MS-DRGs).