Delusional disorder

This code represents a psychotic disorder characterized by the presence of one or more non-bizarre delusions that persist for at least one month. The delusions are typically systematized and can involve various themes such as persecution, grandiosity, jealousy, or somatic concerns, without prominent hallucinations or other psychotic symptoms. Functioning is generally not markedly impaired, and behavior is not obviously odd or bizarre, apart from the direct impact of the delusion(s).

Use this code when documentation clearly indicates a diagnosis of delusional disorder, where the primary symptom is persistent, non-bizarre delusions. This diagnosis is typically made by a psychiatrist or other mental health professional after a thorough psychiatric evaluation. Supporting documentation should detail the nature, duration, and impact of the delusions, and rule out other psychotic disorders, mood disorders, or substance-induced conditions.

• Differentiate from other psychotic disorders like schizophrenia (295.xx) where bizarre delusions, hallucinations, and significant functional impairment are present.
• Ensure the documentation specifies "non-bizarre" delusions and the absence of other prominent psychotic features to accurately assign this code.
• Consider sequencing this code as the primary diagnosis when it is the main reason for the encounter, unless an underlying medical condition is determined to be causative.