F28 — Other psychotic disorder not due to a substance or known physiological condition
Is F28 billable?
Yes — F28 is billable for FY2027. F28 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F28 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F28 at a glance
| Code | F28 |
|---|---|
| Description | Other psychotic disorder not due to a substance or known physiological condition |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F28 group to?
F28 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 885Psychosesmedical
How is F28 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F28. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Hallucinosis (chronic)
- Insanity, insane › confusional
- Menopause, menopausal › psychosis NEC (asymptomatic) (state)
- Psychosis, psychotic › hallucinatory, chronic
- Psychosis, psychotic › involutional
- Disorder › schizophrenia spectrum and other psychotic disorder › specified NEC (of)
- Psychosis, psychotic › nonorganic › specified NEC
- Schizophrenia, schizophrenic › spectrum and other psychotic disorder › specified NEC
Inclusion terms
Alternative wording in documentation that is classified to F28.
- Chronic hallucinatory psychosis
- Other specified schizophrenia spectrum and other psychotic disorder
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F28, but a patient may have both at the same time. When documentation supports it, F28 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
How long has F28 existed?
F28 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.