What is the ICD-10 code for Delusional disorders?

The ICD-10-CM code for Delusional disorders is F22 (fiscal year 2026). It is a billable diagnosis code.

What does ICD-10 code F22 mean?

F22 is the ICD-10-CM diagnosis code for Delusional disorders. Delusional disorders

Is F22 a billable ICD-10 code?

Yes, F22 is a billable ICD-10-CM code that can be used on medical claims.

What chapter is F22 in?

F22 is classified under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), Section F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29).

What are the includes and excludes for F22?

Excludes1 (not coded here): mood [affective] disorders with psychotic symptoms (F30.2, F31.2, F31.5, F31.64, F32.3, F33.3); paranoid schizophrenia (F20.0). Excludes2 (not included here): paranoid personality disorder (F60.0); paranoid psychosis, psychogenic (F23); paranoid reaction (F23).

F22 Delusional disorders

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The ICD-10-CM code for Delusional disorders is F22 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter: 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Section: F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
Category F22: 1 code (1 billable)
FY2026 Status: Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F22:

Paraphrenia, paraphrenic (late)
Sander's disease (paranoia)
Paranoia (querulans)
Cotard's syndrome
Sensitiver Beziehungswahn
Lycanthropy
Climacteric (female) › paranoid state
Disorder (of) › delusional (persistent) (systematized)

Excludes1

Not coded here. These conditions should NOT be coded together with F22.

mood [affective] disorders with psychotic symptoms (F30.2, F31.2, F31.5, F31.64, F32.3, F33.3)
paranoid schizophrenia (F20.0)

Excludes2

Not included here. These conditions are coded elsewhere but may be coded together if applicable.

paranoid personality disorder (F60.0)
paranoid psychosis, psychogenic (F23)
paranoid reaction (F23)

Inclusion Terms

Delusional dysmorphophobia
Involutional paranoid state
Paranoia
Paranoia querulans
Paranoid psychosis
Paranoid state
Paraphrenia (late)
Sensitiver Beziehungswahn

U.S. Hospital Utilization

An estimated 66,910 U.S. inpatient stays in 2023 included F22 among the documented diagnoses.
7,540 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a

Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026