Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

ICD-10 codes F40-F48 identify specific anxiety-related, dissociative, stress-induced, somatoform, and other nonpsychotic mental disorders. These codes cover conditions ranging from phobias and panic disorders to post-traumatic stress disorder and obsessive-compulsive disorder.

This code range includes detailed categories like F40 for phobic anxiety disorders such as agoraphobia ("fear of going out" or "fear of open spaces," coded as F40.00) and social phobias ("fear of public speaking," F40.10). F41 addresses other anxiety disorders including panic disorder (F41.0) and generalized anxiety disorder (F41.1). Obsessive-compulsive disorder and related conditions are captured under F42, while F43 covers reactions to severe stress including acute stress reaction and post-traumatic stress disorder (PTSD, F43.1). Dissociative and conversion disorders like psychogenic amnesia and dissociative identity disorder fall under F44. Somatoform disorders, such as somatization disorder and hypochondriasis (F45.21, synonymous with illness anxiety disorder), are included in F45. Lastly, F48 codes cover other nonpsychotic mental issues like depersonalization-derealization syndrome (F48.1) and pseudobulbar affect (F48.2). This comprehensive set specifically guides the diagnosis and classification of diverse anxiety, stress-related, and somatic symptom conditions critical for clinical documentation and medical coding accuracy.