The ICD-10, or the International Classification of Diseases, 10th Revision, is a standardized system used globally to classify and code diagnoses, symptoms, and procedures related to health care. This classification system enhances reliability and validity in diagnosing mental disorders by providing a common language and framework for clinicians. Furthermore, ICD-10 supports cross-cultural assessment and diagnosis by offering a consistent method for understanding and interpreting health issues across different populations and cultural contexts.