DC:0–5™ (Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood) Version 2.0 is the definitive diagnostic manual for professionals working with children from birth through age 5. Used worldwide by clinicians and early childhood specialists, it offers a developmentally grounded approach to identifying and treating mental health and developmental disorders in the earliest years, when intervention matters most.

First introduced in 1994 and widely trusted across disciplines, Version 2.0 sharpens clinical precision through a comprehensive five-axis system that integrates developmental context, relationships, and psychosocial stressors. It equips professionals to diagnose conditions not fully addressed in other systems, apply criteria with confidence, communicate clearly across teams, and align with standardized diagnostic codes. The result is earlier identification, stronger care planning, and better outcomes for children and families.

Fully updated to reflect current research and clinical practice, Version 2.0 includes refined guidance for children up to age 5, expanded considerations for younger ages, and updated diagnostic algorithms for emerging and evolving disorders.

DC:0–5™ (Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood) Version 2.0 is the definitive diagnostic manual for professionals working with children from birth through age 5. Used worldwide by clinicians and early childhood specialists, it offers a developmentally grounded approach to identifying and treating mental health and developmental disorders in the earliest years, when intervention matters most.

First introduced in 1994 and widely trusted across disciplines, Version 2.0 sharpens clinical precision through a comprehensive five-axis system that integrates developmental context, relationships, and psychosocial stressors. It equips professionals to diagnose conditions not fully addressed in other systems, apply criteria with confidence, communicate clearly across teams, and align with standardized diagnostic codes. The result is earlier identification, stronger care planning, and better outcomes for children and families.

Fully updated to reflect current research and clinical practice, Version 2.0 includes refined guidance for children up to age 5, expanded considerations for younger ages, and updated diagnostic algorithms for emerging and evolving disorders.

A Guide to the Use of DC:0-5 Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood in Diagnostic Assessment and Treatment Planning. The Casebook is a compilation of case studies as a companion volume to DC:0-5TM: Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood (DC:0-5; ZERO TO THREE, 2016, 2021).

The DC:0–5 Casebook is designed to enhance understanding of not only clinical disorders but also the use and importance of the multiaxial framework in understanding the comprehensive diagnostic “story” of the child’s and family’s experience through a rich contextual frame. Each section of the casebook outlines the case and provides case conceptualization, diagnostic summary, discussion, and some questions for the reader to reflect on related to the case and clinical issues raised.

DC:0–5™ (Clasificación Diagnóstica de los Trastornos de la Salud Mental y del Desarrollo de la Infancia y la Primera Infancia), Versión 2.0, es el manual diagnóstico definitivo para profesionales que trabajan con niños desde el nacimiento hasta los 5 años. Utilizado en todo el mundo por clínicos y especialistas en primera infancia, ofrece un enfoque basado en el desarrollo para identificar y tratar trastornos de salud mental y del desarrollo en los primeros años, cuando la intervención es más importante.

Introducido por primera vez en 1994 y ampliamente reconocido en múltiples disciplinas, la Versión 2.0 mejora la precisión clínica a través de un sistema integral de cinco ejes que integra el contexto del desarrollo, las relaciones y los factores psicosociales de estrés. Proporciona a los profesionales herramientas para diagnosticar condiciones que no están completamente abordadas en otros sistemas, aplicar criterios con confianza, comunicarse con claridad entre equipos y alinearse con códigos diagnósticos estandarizados. El resultado es una identificación más temprana, una planificación de la atención más sólida y mejores resultados para los niños y sus familias.

Completamente actualizada para reflejar la investigación actual y la práctica clínica, la Versión 2.0 incluye orientaciones refinadas para niños hasta los 5 años, consideraciones ampliadas para edades más tempranas y algoritmos diagnósticos actualizados para trastornos emergentes y en evolución.