What does ICD-10 code F28 mean?

F28 is the ICD-10-CM diagnosis code for Other psychotic disorder not due to a substance or known physiological condition. Other psychotic disorder not due to a substance or known physiological condition

Is F28 a billable ICD-10 code?

Yes, F28 is a billable ICD-10-CM code that can be used on medical claims.

What chapter is F28 in?

F28 is classified under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), Section F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29).

F28 Other psychotic disorder not due to a substance or known physiological condition

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The ICD-10-CM code for Other psychotic disorder not due to a substance or known physiological condition is F28 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter: 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Section: F20-F29: Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
Category F28: 1 code (1 billable)
FY2026 Status: Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F28:

Hallucinosis (chronic)
Menopause, menopausal (asymptomatic) (state) › psychosis NEC
Psychosis, psychotic › hallucinatory, chronic
Psychosis, psychotic › involutional
Insanity, insane › confusional
Psychosis, psychotic › nonorganic › specified NEC
Disorder (of) › schizophrenia spectrum and other psychotic disorder › specified NEC
Schizophrenia, schizophrenic › spectrum and other psychotic disorder › specified NEC

Inclusion Terms

Chronic hallucinatory psychosis
Other specified schizophrenia spectrum and other psychotic disorder

U.S. Hospital Utilization

An estimated 4,185 U.S. inpatient stays in 2023 included F28 among the documented diagnoses.
1,505 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a

Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference F28 with the canonical source and edition:

F28 — Other psychotic disorder not due to a substance or known physiological condition. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/F28

Canonical URL: https://icd10codingpro.com/codes/F28