Patients presenting for bariatric surgery are psychiatrically vulnerable population. Previous studies have examined the prevalence of psychiatric disorders utilizing structured interviews based upon the DSM-IV. The current study examined whether similar lifetime prevalence would be shown using the DSM-5. Participants (N=113) were evaluated as part of a longitudinal study examining post-operative weight loss outcomes. Two study sites (Cleveland and Fargo) were utilized. Mean age of participants was 41.7 years (SD=10.2). 81.4% of the sample self-identified their gender as women. 76.1% of participants were Caucasian, 19.5% were African-American, 2.7% were more than one race and 1.8% were Latino. Participants were administered the Structured Clinical Interview for DSM-5 (SCID5) in the month preceding surgery by a licensed clinical psychologist or trained research assistant. The Table below shows the lifetime prevalence estimates of the current study using the SCID5 in comparison to the range and mean of 3 US studies using the Structured Interview for the DSM-IV. Overall, prevalence was similar or lower than prior studies. Changes to diagnostic criteria may explain differences although future studies across other sites are needed to better understand the population.