The DSM-5 aligns with global coding standards, replacing the outdated multiaxial system with a revised structure that integrates diagnostic criteria and reflects a single-axis approach. Key changes include the removal of NOS diagnoses and the introduction of clearly defined specifiers for disorders, emphasizing the importance of contextual factors and the use of ICD-9 and ICD-10 codes for accurate diagnosis and billing. Clinicians are urged to ensure the DSM-5 is readily available and to follow specified coding practices for compliance and effective treatment management.