Transition to adult services for children and youth with special health care needs (CYSHCN) has emerged as an important event in the life course of individuals with disabilities. Issues that interfere with efficient transition to adult health care include the perspectives of stakeholders, age limits on pediatric service, complexity of health conditions, a lack of experienced healthcare professionals in the adult arena, and health care financing for chronic and complex conditions. The purposes of this study were to develop a definition of successful transition and to identify determinants that were associated with a successful transition. The 2007 Survey of Adult Transition and Health dataset was used to select variables to be considered for defining success and for identifying predictors of success. The results showed that a small percentage of young adults who participated in the 2007 survey had experienced a successful transition from their pediatric care.