The 31st annual Patient Classification Systems International (PCSI) Conference: Towards sustainable health and social care systems will focus on issues that top the health and social care agendas — case mix, health information, person-centered health care, value-based approaches, assessment and appropriate funding. In keeping with the tradition of PCSI events, the conference will provide opportunities for inspiring scientific work, unique social events and invaluable networking.The annual conference is the primary PCSI event, where case mix researchers, analysts, professional organizations active in health and social care, government officials and many others gather to discuss recent developments in case mix. Participants will present and learn the latest in case mix concepts from their peers through oral and poster presentation sessions. The event also allows for informal meetings of the minds between a wide range of individuals. In addition to the many learning opportunities, the annual conference is perfect for socializing with friends and colleagues from around the globe.