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DC:0–5™ Manual and Training

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ZERO TO THREE is proud to announce the release of DC:0–5™ Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood Version 2.0 and the DC:0–5™ Clinical Training for advanced infant and early childhood mental health professionals.

In 1994, ZERO TO THREE published its groundbreaking manual, DC:0–3 Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood. The first developmentally based system for diagnosing mental health and developmental disorders in infants and toddlers, this critically important guide quickly became an indispensable resource for mental health clinicians, counselors, physicians, early interventionists, educators, and researchers, and established ZERO TO THREE as a leading authority in the field of infant mental health.

DC:0–5™ Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood, first released in 2016, captures new findings relevant to diagnosis in young children and addresses unresolved issues in the field. The updated DC:0–5™ Version 2.0 arrived in 2021. DC:0–5™ Version 2.0 enhances the professional’s ability to diagnose and treat mental health problems in the earliest years by identifying and describing disorders not addressed in other classification systems and by pointing the way to effective intervention approaches.

Individuals across disciplines will find DC:0-5™ Version 2.0 to be an essential guide to diagnostic formulation with infants, young children, and their families, in a wide range of settings.

What’s New in DC:0–5™?

  • NEW 2021! DC:0–5™ Version 2.0 includes some clarifying language throughout the manual as well as the inclusion of numerical codes to help facilitate the inclusion of DC:0-5 disorders. Discrete numerical coding provides consistency among various disorder lists and can prevent misunderstanding when translating diagnoses into other languages. The updated information is available for free as a supplemental. Download Now

  • Includes disorders occurring in children from birth through 5 years old

  • Criteria extended to younger ages when appropriate, including, in some cases, to the first year of life

  • Introduces discussion of several new disorders, including:

    • Relationship-Specific Disorder of Early Childhood
    • Dysregulated Anger and Aggression Disorder of Early Childhood
    • Atypical Social-Communication Emergent Neurodevelopmental Disorder
  • Retains the multi-axial system, allowing optimal consideration of context in assessment and diagnosis; most axes revised substantially

DC:0–5™ Training

DC:0–5 Version 2.0 and associated ZERO TO THREE DC:0–5 Training build on the powerful legacy of the DC:0-3 using the latest scientific findings and clinical research. ZERO TO THREE is the only official training provider for DC:0–5. The curricula have been designed to meet the needs and interests of multiple audiences through a variety of modalities consistent with the content and approach of DC:0-5.

Currently, there are four main categories of DC:0-5 training offerings:

  • DC:0-5 Clinical Training
  • DC:0-5 Seminars/Overview Training
  • DC:0-5 Faculty Teaching Resource
  • DC:0-5 Training of Trainers

Visit the Training Schedule Page to register! The training calendar fills up fast, so make your plans today.

Continuing Education credits (CEs) are available for ZERO TO THREE training programs.

Learn More

For more information, visit the ZERO TO THREE Learning Center.

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