Schizophrenia (F20) ICD-10-CM
The F20 code range covers schizophrenia with 10 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code, if applicable, to identify:
- other specified cognitive deficit R41.84
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- brief psychotic disorder F23
- cyclic schizophrenia F25.0
- mood [affective] disorders with psychotic symptoms F30.2 F31.2 F31.5 F31.64 F32.3 F33.3
- schizoaffective disorder F25
- schizophrenic reaction NOS F23
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the F20 Range 10 codes · 8 billable
- F20 SchizophreniaNon-billable
- F20.0 Paranoid schizophrenia
- F20.1 Disorganized schizophrenia
- F20.2 Catatonic schizophrenia
- F20.3 Undifferentiated schizophrenia
- F20.5 Residual schizophrenia
- F20.8 Other schizophreniaNon-billable
- F20.81 Schizophreniform disorder
- F20.89 Other schizophrenia
- F20.9 Schizophrenia, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the F20 range.
Residual Type Schizophrenia
A subtype of schizophrenia in which the individual has suffered an episode of schizophrenia but there are no longer any delusions, hallucinations, disorganized speech or behavior. Residual symptoms are seen in the form of negative symptoms (such as flat affect or avolition) or attenuated positive symptoms (such as odd beliefs).
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, Catatonic
A type of schizophrenia characterized by abnormality of motor behavior which may involve particular forms of stupor, rigidity, excitement or inappropriate posture.
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.
Schizophreniform Disorder
A disorder that differs from schizophrenia specifically in total duration (schizophreniform disorder lasts at least 1 month but less than 6 months whereas schizophrenia lasts at least 6 months); schizophreniform disorder also typically causes less impairment in the individual's social and occupational functioning.
Undifferentiated Type Schizophrenia
A subtype of schizophrenia in which the individual exhibits the characteristic symptoms of schizophrenia but the overall picture is not one of catatonic type, paranoid type, or disorganized type schizophrenia.
About the F20 Code Range
Schizophrenia is a severe disorder marked by a retreat from reality, delusions, hallucinations, changes in emotion, and regressive behavior.
The subdivisions distinguish paranoid F20.0, disorganized F20.1, catatonic F20.2, undifferentiated F20.3, and residual F20.5 schizophrenia.
Other schizophrenia, F20.8, divides into schizophreniform disorder F20.81 and other schizophrenia F20.89. F20.9 identifies unspecified schizophrenia.
Questions About This Page
How many billable codes are in the F20 range?
Of the 10 codes in this range, 8 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the F20 range classify?
The range classifies schizophrenia. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
