Defining the value in health care and elaborating appropriate value-propositions for health care beneficiaries poses numerous empirical and normative challenges. Different methods of Health Technology Assessments (HTAs) embedded in various interdisciplinary approaches of defining the value of health care have been established in recent years. Current initiatives aim to develop and combine transnational attempts to define an overall acceptable range for value-based healthcare interventions. In this book international scholars with background in medicine, philosophy, health-economics and further disciplines, who participated in an interdisciplinary conference in 2019 combine in-depth analyses with reflections informed by multidisciplinary debates on a pressing issue in healthcare.