Depressive Disorders - From ICD-10 to ICD-11 Abstract: This article presents the main changes in the classification of depressive disorders associated with the transition from ICD-10 to ICD-11. We evaluate the changes regarding their relevance for diagnostic assessment during childhood and adolescence and the current state of research. Some changes were implemented in the categorization of disorders: In ICD-11, depressive disorders are listed as a disorder group separately from bipolar disorders and now include both dysthymic disorder as well as mixed depressive and anxiety disorder. With the introduction of ICD-11, the diagnostic criteria for depressive episodes were revised, however, specific considerations for diagnoses in children and adolescents remain unaddressed. The ICD-11 newly introduces the diagnosis of premenstrual dysphoric disorder as a depressive disorder, in parallel to DSM-5. In addition, it introduced seven diagnostic specifiers that describe depressive disorders beyond the diagnosis. The clinical descriptions and diagnostic guidelines were comprehensively updated with the revision of the ICD criteria and supplemented with developmental characteristics, which are particularly relevant for the assessment of children and adolescents. However, the guidelines are not yet included in the German draft version currently available online. More research with children and adolescents is needed to evaluate the reliability of the updated diagnostic criteria for this age group.