Abstract
The concept of vice-wrongful or criminal conduct-poses a metaphysical clash with the non-moral values of impairment, injury, and incapacity that drive illness/disorder concepts. Nevertheless, vice and disorder concepts have interpenetrated psychiatry past and present through practical social-service interactions between the mental health, adult and juvenile criminal justice, and intellectual disability systems. This chapter will unpack and briefly review the philosophical issues, including considerations of moral and legal responsibility, diagnostic constructs, and the medicalization of vice in contemporary psychiatry.