What F22 covers · when clinicians use it
ICD-10 code F22 identifies Delusional disorders in the U.S. ICD-10-CM clinical and billing record set. It sits within the Mental, Behavioral & Neurodevelopmental chapter (F01–F99), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply F22 when an encounter's findings match the Delusional disorders description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify F22 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for F22 and is a coding reference, not clinical, diagnostic, or billing advice.
F22 refers to Delusional disorders, a category of psychotic disorders characterized by disruptions in thinking, perception, emotional regulation, and behavior. These conditions often involve hallucinations, delusions, disorganized speech or behavior, and significant functional impairment.
Symptoms
- Delusions – Strongly held false beliefs not based in reality
- Hallucinations – Seeing, hearing, or feeling things that aren’t there
- Disorganized thinking – Evident through incoherent speech or erratic responses
- Social withdrawal – A common sign in schizophrenia and schizoaffective disorders
- Mood symptoms – Depression or mania seen in F25 schizoaffective disorders
- Suspiciousness or paranoia – Particularly in F22 delusional disorder
- Short-term confusion – Seen in F23 brief psychotic disorder
Diagnosis
Diagnosis of Delusional disorders includes psychiatric evaluation, observation over time, ruling out substance use or physiological causes, and using DSM-5 or ICD10 criteria. Neuroimaging or labs may be used to exclude other conditions like tumors or infections.
ICD10 Code Usage
ICD10 code F22 is primarily used in psychiatry, neurology, and general medicine to document psychotic disorders that are not substance-induced. It facilitates care coordination, medication management, insurance coding, and longitudinal mental health monitoring.
Related Codes
- F20 – Schizophrenia
- F21 – Schizotypal disorder
- F23 – Brief psychotic disorder
- F24 – Shared psychotic disorder
- F25 – Schizoaffective disorders
- F28 – Other psychotic disorder not due to a substance or known physiological condition
- F29 – Unspecified psychosis not due to a substance or known physiological condition
FAQs
Q1: What is ICD10 code F22?
A: This code refers to Delusional disorders, a psychotic disorder not caused by substances or medical illness, often affecting thought and behavior.
Q2: Are these conditions lifelong?
A: Some conditions like schizophrenia and schizoaffective disorder are chronic, while others like brief psychotic disorder may resolve fully.
Q3: What is the treatment approach?
A: Antipsychotic medications, psychotherapy, psychosocial rehabilitation, and sometimes hospitalization.
Q4: How are these disorders different from mood or anxiety disorders?
A: Psychotic disorders primarily affect perception and cognition, while mood/anxiety disorders affect emotion and arousal.
Q5: Who manages these disorders?
A: Psychiatrists, psychologists, social workers, and community mental health teams.
Conclusion
ICD10 code F22 is crucial for identifying and managing Delusional disorders. Accurate coding enables targeted psychiatric treatment, long-term care planning, and supports mental health advocacy and research initiatives.