2026 ICD-10-CM Diagnosis Code F23Brief psychotic disorder

ICD-10-CM Codes›F01–F99›F20-F29›F23

ICD-10-CM F23
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F23 is a billable ICD-10-CM diagnosis code for brief psychotic disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Schizophrenia spectrum and other psychotic disorders.

Code Identity

ICD-10-CM Code
F23
Billable Status
Yes — Valid for Submission
Code Describes
Brief psychotic disorder
Chapter
F20-F29
Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF20-F29Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders
CategoryF23Brief psychotic disorder
This CodeF23Brief psychotic disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute paranoid reaction
  • Acute polymorphic psychotic disorder
  • Acute polymorphic psychotic disorder co-occurrent with symptoms of schizophrenia
  • Acute polymorphic psychotic disorder without symptoms of schizophrenia
  • Acute psychosis
  • Acute schizophrenic episode
  • Acute transient psychotic disorder
  • Bouffée délirante
  • Brief reactive psychosis
  • Cycloid psychosis
  • Disturbance of perception associated with conversion and dissociative phenomenon
  • Psychogenic paranoid psychosis
  • Reactive confusion
  • Reactive psychoses
  • Schizophrenic reaction
  • Transient organic mental disorder
  • Transient organic psychoses

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Paranoid reaction
  • Psychogenic paranoid psychosis

Type 2 Excludes

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Attack, attacks
      • schizophreniform, brief
    • Bouffée délirante
    • Disorder(of)
      • psychotic
        • transient (acute)
    • Disorder(of)
      • schizophreniform
        • brief
    • Episode
      • psychotic
    • Episode
      • schizophrenic (acute) NEC, brief
    • Oneirophrenia
    • Paranoid
      • psychosis (climacteric) (involutional) (menopausal)
        • psychogenic (acute)
    • Paranoid
      • reaction (acute)
    • Psychosis, psychotic
      • acute (transient)
    • Psychosis, psychotic
      • confusional
        • reactive
    • Psychosis, psychotic
      • cycloid
    • Psychosis, psychotic
      • episode
    • Psychosis, psychotic
      • paranoid (climacteric) (involutional) (menopausal)
        • psychogenic (acute)
    • Psychosis, psychotic
      • psychogenic (paranoid)
    • Psychosis, psychotic
      • reactive (brief) (transient) (emotional stress) (psychological trauma)
    • Psychosis, psychotic
      • schizophreniform
        • brief
    • Psychosis, psychotic
      • schizophreniform
        • confusional type
    • Psychosis, psychotic
      • situational (reactive)
    • Reaction
      • paranoid (acute)
    • Reaction
      • schizophrenic
    • Reaction
      • schizophrenic
        • acute (brief) (undifferentiated)
    • Reaction
      • schizophrenic
        • undifferentiated (acute) (brief)
    • Schizophrenia, schizophrenic
      • acute (brief) (undifferentiated)
    • Schizophrenia, schizophrenic
      • reaction
    • State(of)
      • oneiroid (schizophrenia-like)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD001
Schizophrenia spectrum and other psychotic disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Transient Organic Mental Disorder

    an organic mental disorder that is temporary in nature.

Patient EducationClinical

Psychotic Disorders

Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations. Delusions are false beliefs, such as thinking that someone is plotting against you or that the TV is sending you secret messages.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F23 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
298.3 Acute paranoid reaction
Approximate The match is approximate rather than exact.
ICD-9-CM
298.4 Psychogen paranoid psych
Approximate The match is approximate rather than exact.
ICD-9-CM
298.8 React psychosis NEC/NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F23Overview

Is F23 (Brief psychotic disorder) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report brief psychotic disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F23?

Under the General Equivalence Mappings, brief psychotic disorder converts to ICD-9-CM 298.3 (acute paranoid reaction), 298.4 (psychogen paranoid psych), and 298.8 (react psychosis NEC/NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.