2026 ICD-10-CM Diagnosis Code F20.89Other schizophrenia

ICD-10-CM Codes›F01–F99›F20-F29›F20

ICD-10-CM F20.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F20.89 is a billable ICD-10-CM diagnosis code for other schizophrenia. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as acute exacerbation of chronic schizophrenia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Schizophrenia spectrum and other psychotic disorders.

Code Identity

ICD-10-CM Code
F20.89
Billable Status
Yes — Valid for Submission
Code Describes
Other schizophrenia
Short Description
Other schizophrenia
Same as the full description in the CMS dataset.
Parent Code
F20.8
Other schizophrenia

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF20-F29Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders
CategoryF20Schizophrenia
This CodeF20.89Other schizophrenia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute exacerbation of chronic schizophrenia
  • Cenesthopathic schizophrenia
  • Chronic schizophrenia
  • Schizophrenia in remission
  • Simple schizophrenia
  • Subchronic schizophrenia with acute exacerbations

Tabular List NotesGuidance

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

Inclusion Terms

  • Cenesthopathic schizophrenia
  • Simple schizophrenia

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.

    • Schizophrenia, schizophrenic
      • cenesthopathic, cenesthesiopathic
    • Schizophrenia, schizophrenic
      • simple (type)
    • Schizophrenia, schizophrenic
      • simplex
    • Schizophrenia, schizophrenic
      • specified type NEC

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

  • Schizophrenia

    a severe emotional disorder of psychotic depth characteristically marked by a retreat from reality with delusion formation, hallucinations, emotional disharmony, and regressive behavior.

  • Schizophrenia Spectrum and Other Psychotic Disorders

    marked disorders of thought (delusions, hallucinations, or other thought disorder accompanied by disordered affect or behavior), and deterioration from a previous level of functioning. individuals have one o more of the following symptoms: delusions, hallucinations, and disorganized speech. (from dsm-5)

  • Schizophrenia, Catatonic

    a type of schizophrenia characterized by abnormality of motor behavior which may involve particular forms of stupor, rigidity, excitement or inappropriate posture.

  • Schizophrenia, Childhood

    an obsolete concept, historically used for childhood mental disorders thought to be a form of schizophrenia. it was in earlier versions of dsm but is now included within the broad concept of pervasive development disorders.

  • Schizophrenia, Disorganized

    a type of schizophrenia characterized by frequent incoherence; marked loosening of associations, or grossly disorganized behavior and flat or grossly inappropriate affect that does not meet the criteria for the catatonic type; associated features include extreme social withdrawal, grimacing, mannerisms, mirror gazing, inappropriate giggling, and other odd behavior. (dorland, 27th ed)

  • Schizophrenia, Paranoid

    a chronic form of schizophrenia characterized primarily by the presence of persecutory or grandiose delusions, often associated with hallucination.

  • Schizophrenia, Treatment-Resistant

    a subset of schizophrenia with an inadequate response in target symptoms following treatment with two or more antipsychotics.

  • Schizotypal Personality Disorder

    a personality disorder in which there are oddities of thought (magical thinking, paranoid ideation, suspiciousness), perception (illusions, depersonalization), speech (digressive, vague, overelaborate), and behavior (inappropriate affect in social interactions, frequently social isolation) that are not severe enough to characterize schizophrenia.

  • Hallucinations

    subjectively experienced sensations in the absence of an appropriate stimulus, but which are regarded by the individual as real. they may be of organic origin or associated with mental disorders.

  • Chronic Schizophrenia

    schizophrenia that is long-standing and persistent.

  • Residual Chronic Schizophrenia

    chronic schizophrenia in which the person who has experienced at least one schizophrenic episode is no longer experiencing positive symptoms (delusions, hallucinations, disorganized speech or behavior) but may still experience negative symptoms (flat affect, apathy, anhedonia, avolition, alogia).

  • Residual Subchronic Schizophrenia

    subchronic schizophrenia in which the person who has experienced at least one schizophrenic episode is no longer experiencing positive symptoms (delusions, hallucinations, disorganized speech or behavior) but may still experience negative symptoms (flat affect, apathy, anhedonia, avolition, alogia).

  • Subchronic Schizophrenia

    symptoms of schizophrenia lasting less than six months but longer than one month.

Patient EducationClinical

Schizophrenia

Schizophrenia is a serious brain illness. People who have it may hear voices that aren't there. They may think other people are trying to hurt them. Sometimes they don't make sense when they talk. The disorder makes it hard for them to keep a job or take care of themselves.

Read the full article at MedlinePlus

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

Convert F20.89 to ICD-9-CMHistory

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

ICD-9-CM
295.80 Schizophrenia NEC-unspec
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 F20.89Overview

Is F20.89 (Other schizophrenia) a billable code?

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

What is the ICD-9 equivalent of F20.89?

Under the General Equivalence Mappings, other schizophrenia converts to ICD-9-CM 295.80 (schizophrenia NEC-unspec). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.