F03
ICD-10Non-billable categoryUnspecified dementia
Official ICD-10-CM descriptor (FY2026)
Unspecified dementia
F03 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Inclusion terms
- Major neurocognitive disorder NOS
- Presenile dementia NOS
- Presenile psychosis NOS
- Primary degenerative dementia NOS
- Senile dementia NOS
- Senile dementia depressed or paranoid type
- Senile psychosis NOS
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- dementia with delirium or acute confusional state (F05)
- mild memory disturbance due to known physiological condition (F06.8)
More specific codes under F03
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.