Currently, the Accreditation Council of Graduate Medical Education requires time-based pediatric experiences for emergency medicine (EM) residents in both pediatric emergency medicine (PEM) and critical care settings. The American Board of Emergency Medicine has published the Model of the Clinical Practice of Emergency Medicine, which is a list of content an EM resident should learn. However, this list is large and without prioritization and therefore can be difficult to incorporate into time-limited curricula. The primary objective of this study was to develop comprehensive categorization of PEM content using an EM lens. The second objective was to suggest a prioritization for the EM learner of the enumerated PEM elements. We first assembled a comprehensive list of PEM concepts, diagnoses, and procedures that might be taught to EM residents. We then convened focus groups composed of key stakeholders to help formulate content and concept themes important for EM resident training. Once the themes were identified, we divided the list of PEM topics into appropriate themes and then carried out a second round of focus groups expanded to include more diverse expert input for prioritizing the elements of the comprehensive list within each theme. We prioritized 168 important PEM concepts from previous standards and emerging PEM literature among 10 identified themes: the pediatric normal, the bottom-line boil-it-down approach, common presentations, high-acuity pediatric cases and procedures, differences between children and adults, same between children and adults, red flags, infrequency of caring for a child compared with an adult, keep breadth but promote self-directed depth, and triage and disposition. Based on input from stakeholders in EM resident education, we identified key themes within PEM education and created a framework for the hierarchical categorization of PEM content for within an EM residency.