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    OpenPayerBilling CodesSchizophrenia, schizotypal, delusional, and other non-mood psychotic disordersICD-10-CM f22-delusional-disorders
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    ICD-10-CM Code For Delusional Disorders: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F22 includes primary delusional disorders characterized by persistent fixed false beliefs such as persecutory, jealous, grandiose, somatic, or mixed types and related non-bizarre or bizarre delusional presentations. These ICD-10-CM diagnosis codes are used to document care for patients with predominant delusional symptoms, capturing clinical complexity, functional impairment, and any associated psychiatric or medical comorbidity. Accurate coding within the ICD-10-CM F22 group supports proper claim adjudication and complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM F22: Delusional Disorders Overview

    Delusional disorders represent persistent, non-bizarre or bizarre false beliefs that are not attributable to mood disorders or substance use and primarily affect thought content and perception. These diagnoses target psychiatric conditions affecting cognition, perception, and social functioning. Accurate coding of delusional disorders is important for clinical documentation and appropriate reimbursement because it communicates diagnosis specificity and complexity to payers and care teams.

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    When to Use

    Use a code from this group when the primary clinical presentation is a persistent delusion or set of delusions that are not better explained by substance use, a mood disorder with psychotic features, or another psychotic disorder. Select the most specific subtype code when documentation identifies a particular delusional theme or specify F22.9 when the delusional disorder is unspecified.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    F22Delusional disorders

    DRG Codes

    1 rows

    DRG CodeDescription
    885Psychoses

    Typical Clinical Scenarios

    • An adult in their 40s presents to outpatient psychiatry with a several-month history of a fixed, nonbizarre belief that neighbors are stealing their personal items and broadcasting their private conversations, without evidence of hallucinations or disorganized thought; symptoms cause significant social withdrawal and repeated confrontations. A delusional disorder diagnosis is assigned because the core feature is one or more persistent delusions with otherwise relatively preserved functioning and absence of criteria for schizophrenia. Typical codes: F22
    • An elderly patient brought to the emergency department by family after increasingly firm conviction over weeks that a caregiver is poisoning their food, leading to refusal of meals and acute dehydration; mental status exam shows intact orientation and no prominent mood symptoms. The presentation is an acute crisis driven by a persistent, nonbizarre fixed false belief causing safety risks, warranting inpatient stabilization and assignment of a delusional disorder code. Typical codes: F22
    • A middle-aged person with a long history of methamphetamine use develops an isolated, persistent persecutory belief that coworkers are spying on them, complicating substance use disorder management and contributing to medication nonadherence and social isolation; psychotic symptoms have persisted beyond periods of intoxication. Because the delusional belief persists independent of acute substance effects and is impairing occupational and social functioning, a delusional disorder diagnosis is applied as a comorbid psychotic condition. Typical codes: F22

    Related Codes

    F20-SCHIZOPHRENIA

    ICD-10-CM Code For Schizophrenia: Group Overview

    F21-SCHIZOTYPAL-DISORDER

    ICD-10-CM Code For Schizotypal Disorder: Group Overview

    F23-BRIEF-PSYCHOTIC-DISORDER

    ICD-10-CM Code For Brief Psychotic Disorder: Group Overview

    F24-SHARED-PSYCHOTIC-DISORDER

    ICD-10-CM Code For Shared Psychotic Disorder: Group Overview

    F25-SCHIZOAFFECTIVE-DISORDERS

    ICD-10-CM Code For Schizoaffective Disorders: Group Overview

    F28-OTHER-PSYCHOTIC-DISORDER

    ICD-10-CM Code For Other Psychotic Disorder Not Due To A Substance Or Known Physiological Condition: Group Overview

    F29-UNSPECIFIED-PSYCHOSIS-NOT-DUE-TO-A-SUBSTANCE

    ICD-10-CM Code For Unspecified Psychosis Not Due To A Substance Or Known Physiological Condition: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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