An organization? and category?level comparison of diagnostic requirements for mental disorders in <scp>ICD</scp> ?11 and <scp>DSM</scp> ?5

In 2013, the American Psychiatric Association (APA) published 5th edition of its Diagnostic and Statistical Manual Mental Disorders (DSM-5). 2019, World Health Assembly approved 11th revision International Classification Diseases (ICD-11). It has often been suggested that field would benefit from a single, unified classification mental disorders, although priorities constituencies two sponsoring organizations are quite different. During development ICD-11 DSM-5, Organization (WHO) APA made efforts toward harmonizing systems, including appointment an ICD-DSM Harmonization Group. This paper evaluates success these harmonization provides guide for practitioners, researchers policy makers describing differences between systems at both organizational disorder level. The organization classifications disorders is substantially similar. There nineteen categories do not appear in seven DSM-5 ICD-11. We compared Essential Features section Clinical Descriptions Guidelines (CDDG) with criteria sets 103 diagnostic entities systems. rated 20 (19.4%) as having major differences, 42 (40.8%) minor definitional 10 (9.7%) due to greater degree specification 31 (30.1%) essentially identical. Detailed descriptions some most important their rationale related evidence, provided. ICD DSM now closer than any time since ICD-8 DSM-II. Differences largely based on differing uses interpretations evidence. Substantively divergent approaches allow empirical comparisons validity utility can contribute advances field.