States need a policy and systems infrastructure that creates a robust continuum of mental health supports and services for infants, young children, and families. One critical element of this continuum is developmentally appropriate diagnosis. "DC:0-5[TM]: Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and…

This article defines the concept of Infant and Early Childhood Mental Health (IECMH) and describes how it provides the foundation for lifelong health and well-being. The authors provide policy recommendations that include the need to: (a) establish cross-agency leadership for IECMH, (b) ensure Medicaid payment for IECMH services, (c) invest in…