PURPOSE: Previous studies have characterized factors associated with readmission following common plastic surgery procedures within 30 days postoperatively. However, with recent changes to the bundled payment plans, forcing medical systems to cover patient care up to 90 days postoperatively, it is imperative that a comprehensive analysis is performed in order to appreciate comorbidities associated with 30- and 90-day readmission. The National Readmission Database (NRD) is a powerful tool to look beyond the current literature at 90-day readmission rates as it provides readmission from over 50% of the population. This study utilized the NRD to describe the comorbidities associated with 30- and 90-day readmissions to help hospitals, healthcare mangers, and plastic surgeons improve patient outcomes and reduce bundled payment penalties. METHODS: The 2012–2014 NRD was mined for reduction mammoplasty and subcutaneous mammectomy, augmentation mammoplasty, mastopexy, total breast reconstruction, and abdominoplasty/panniculectomy based on ICD-9 CM codes. Only patients ≥18, those who had elective surgery, those who had a length of stay <365 days (to avoid confounding chronic-care complications), those with a diagnosis of cancer of the brain/nervous system, currently receiving maintenance chemotherapy/radiotherapy, or those with missing data/discharged to a court of law were also excluded. A bivariate and multivariate analysis was conducted on these patients to determine the significant comorbidities associated with a 30- and 90-day readmission using a Pearson’s chi-square test and Bonferroni correction. Odds ratios were reported to determine the most powerful correlations with readmission. RESULTS: The overall 30-day readmission rate was 5.7%, and the overall 90-day readmission rate was 9.7%. Medical comorbidities that were found to be statistically significant (P < 0.05) in their association with 90-day readmission include anemia deficiency, congestive heart failure, coagulopathy, depression, diabetes, obesity, and hypertension. On multivariate regression analysis of independent predictors of 90-day readmissions, patients that live in fringe counties of metro areas of ≥1 million population (odds ratio [OR] = 0.82; P < 0.05), counties in metro areas of 250,000–999,999 population (OR = 0.79; P < 0.05), and counties in metro areas of 50,000–249,000 population (OR = 0.61; P < 0.05) were less likely to have complicated readmissions. CONCLUSION: Although the overall readmissions for common plastic surgeries is relatively low compared with other major surgical operations, the readmission rate for 90- versus 30-day readmission increased by 4 percentage points and the comorbidity associations with readmissions shifted. This suggests that current literature defining risk factors for postoperative readmission are not sufficient. Further studies to elucidate causal factors through prospective studies should be encouraged and are in need to continue to determine and reduce 90-day readmissions.