This course focuses on the principles and practices of diagnosis, treatment planning, and prevention in clinical mental health counseling. Students will develop competency in utilizing current diagnostic classification systems, conducting comprehensive biopsychosocial assessments, formulating evidence-based treatment plans, and implementing preventive interventions. Emphasis is placed on culturally sustaining assessment practices, ethical considerations in diagnosis, and development of intervention strategies across diverse populations and settings. The course addresses co-occurring disorders, trauma-informed approaches, and risk assessment procedures.