What does ICD-10 code F20 mean?

ICD-10 code F20 is the standardized code used for schizophrenia in medical records and coding systems.

When is ICD-10 code F20 used?

Doctors, hospitals, and insurers may use ICD-10 code F20 when recording schizophrenia in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code F20 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code F20: Schizophrenia

Name: ICD-10 Code F20: Schizophrenia
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:06:20.869Z

F20 is an ICD-10 diagnosis entry used to group records related to Schizophrenia. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

When is it used?

May be used when a clinician documents schizophrenia in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

5Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

block

F20-F29Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders

currentF20-F29

Official coding notes

Applicable to

code, if applicable, to identify:
other specified cognitive deficit (R41.84-)

Excludes1 (do not code together)

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)

Excludes2 (may code together if documented)

schizophrenic reaction in:
alcoholism (F10.15-, F10.25-, F10.95-)
brain disease (F06.2)
epilepsy (F06.2)
psychoactive drug use (F11-F19 with .15. .25, .95)
schizotypal disorder (F21)

Use additional code

code, if applicable, to identify:
other specified cognitive deficit (R41.84-)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Sibling codes

F21Schizotypal disorderbillable F22Delusional disordersbillable F23Brief psychotic disorderbillable F24Shared psychotic disorderbillable F25Schizoaffective disorders F28Other psychotic disorder not due to a substance or known physiological conditionbillable F29Unspecified psychosis not due to a substance or known physiological conditionbillable

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

F20

Replacement codes

F20.0 — Paranoid schizophreniaF20.1 — Disorganized schizophreniaF20.2 — Catatonic schizophreniaF20.3 — Undifferentiated schizophreniaF20.5 — Residual schizophreniaF20.9 — Schizophrenia, unspecified

Common synonyms

Schizophrenia

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.