This document discusses diagnostic processes and differences between the DSM-5 and ICD-10 diagnostic manuals. It summarizes key differences between the manuals, such as Asperger's Disorder being listed as a separate diagnosis in ICD-10 but included under Autism Spectrum Disorder in DSM-5. It also notes differences in how they classify substance use disorders. The document concludes that while the manuals differ in some of their classifications and code descriptions, they are both used in diagnostic processes in Western Australian mental health settings.