Health care transitions (HCT) from pediatric to adult health care remain a challenge for children and youth with special health care needs (CYSHCN), their families and their clinicians. While the HCT literature has expanded, gaps remain in how to improve health outcomes during transitions. HCTs broadly encompass three key domain areas: transition planning, transfer to adult health care clinicians or an adult model of care, and integration into an adult care/model of care. The CYSHCNet national research agenda development process, described in a previous article, prioritized several key research areas to address deficiencies in the HCT process. The highest priority questions identified were "What are the best models to accomplish youth-adult transition planning? How might this translate to other transitions (eg, to new clinicians, new settings, new schools, etc.)?" and "How do gaps in insurance and community supports during early adulthood effect CYSHCN health outcomes, and how can they be reduced?". Based upon these priorities, we describe the current state of transition research and recommendations for future investigation. Recommendations: The authors recommend 3 primary areas of investigation: 1) Understanding the optimal development and implementation of HCT service models in partnership with youth and families to improve transition readiness and transfer 2) Defining the process and outcome measures that capture adequacy of transition-related activities and 3) Evaluating fiscal policies that incentivize the processes of transition readiness development, transfer to adult health care services, and continuity of care within an adult health care setting. This article explores approaches within each research domain.