F28
ICD-10BillableOth psych disorder not due to a sub or known physiol cond
Official ICD-10-CM descriptor (FY2026)
Other psychotic disorder not due to a substance or known physiological condition
F28 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Chronic hallucinatory psychosis
- Other specified schizophrenia spectrum and other psychotic disorder
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.