2026 ICD-10-CM Diagnosis Code F20.9Schizophrenia, unspecified
ICD-10-CM Codes›F01–F99›F20-F29›F20
- Billable — Valid for Submission
- Chronic Condition
F20.9 is a billable ICD-10-CM diagnosis code for schizophrenia, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as childhood-onset schizophrenia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Schizophrenia spectrum and other psychotic disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Childhood-onset schizophrenia
- Early onset schizophrenia
- Late onset schizophrenia
- Schizophrenia
- Schizophrenic disorders
- Subchronic schizophrenia
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Schizophrenia, schizophrenic - F20.9
- childhood type - F20.9
- chronic undifferentiated - F20.9
- undifferentiated (type) - F20.3
- chronic - F20.9
- Syndrome - See Also: Disease;
- schizophrenic, of childhood NEC - F20.9
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Schizophrenia, schizophrenic
- Schizophrenia, schizophrenic
- childhood type
- Schizophrenia, schizophrenic
- chronic undifferentiated
- Schizophrenia, schizophrenic
- undifferentiated (type)
- chronic
- Syndrome
- schizophrenic, of childhood NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.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 F20.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F20.9Overview
Is F20.9 (Schizophrenia) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report schizophrenia, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What is the ICD-9 equivalent of F20.9?
Under the General Equivalence Mappings, schizophrenia, unspecified converts to ICD-9-CM 295.90 (schizophrenia NOS-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.
