F28 Other psychotic disorder not due to a substance or known physiological condition
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
- 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
- Insanity, insane › confusional
- Psychosis, psychotic › hallucinatory, chronic
- Psychosis, psychotic › involutional
- Schizophrenia, schizophrenic › spectrum and other psychotic disorder › specified NEC
- Psychosis, psychotic › nonorganic › specified NEC
- Disorder (of) › schizophrenia 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
Psychoactive substance use disorders (TOC entry)b. Mental and behavioral disorders due to psychoactive substance use ................................... 43
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026