F28
Other psychotic disorder not due to a substance or known physiological condition
F28 is a billable ICD-10-CM diagnosis code for other psychotic disorder not due to a substance or known physiological condition. It is part of the FY2027 code set, effective October 1, 2026. The Alphabetic Index lists it under 8 entries. Its coding notes include 1 Excludes2 entry.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Behavioral Health clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026IPF Primary
IPF MS-DRG adjustment. A principal diagnosis of this code groups to this MS-DRG:
| MS-DRG | Description | Factor |
|---|---|---|
| 885 | Psychoses | 1.00 |
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- disorders of psychological development
Inclusion terms
Conditions classified to this code.
- Chronic hallucinatory psychosis
- Other specified schizophrenia spectrum and other psychotic disorder
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 8 entries
- Disorder (of), schizophrenia spectrum and other psychotic disorder, specified NEC
- Hallucinosis (chronic)
- Insanity, insane, confusional
- Menopause, menopausal (asymptomatic) (state), psychosis NEC
- Psychosis, psychotic, hallucinatory, chronic
- Psychosis, psychotic, involutional
- Psychosis, psychotic, nonorganic, specified NEC
- Schizophrenia, schizophrenic, spectrum and other psychotic disorder, specified NEC