Clinician-rated ICD-11 trait domains and personality disorder types

The International Classification of Diseases (11th edition; ICD-11) has adopted a classification of personality disorders (PDs) that abolishes the established International Classification of Diseases (10th edition; ICD-10) PD types in favor of global severity and stylistic trait domain specifiers. The goal of the current study was to describe the empirical relationship between traditional PD types and the ICD-11 trait domains, which is anticipated to inform and guide clinicians in this profound transition. A total of 246 patients were rated by their clinicians. The Informant-Personality Inventory for ICD-11 was used to rate ICD-11 trait domains while PD types were assigned categorically according to ICD-10. Empirical associations were investigated by means of bivariate correlation and logistic regression analyses with bootstrapping. Results overall showed expected and conceptually meaningful associations between ICD-11 trait domains and categorical ICD-10 PD types, with only a few unexpected deviations. Findings suggest that ICD-11 trait domains capture stylistic features of the established PD types in a conceptually coherent manner. These findings may facilitate continuity and guide translation between categorical PD types (i.e., ICD-10 and Diagnostic and Statistical Manual of Mental Disorders [fifth edition]) and the new ICD-11 classification in mental health care. Future research should seek to replicate these findings in various clinical settings while also integrating the essential PD severity classification. (PsycInfo Database Record (c) 2024 APA, all rights reserved).