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F03

⚠ Non-billable (Header)

Unspecified dementia

Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Major neurocognitive disorder NOSPresenile dementia NOSPresenile psychosis NOSPrimary degenerative dementia NOSSenile dementia NOSSenile dementia depressed or paranoid typeSenile psychosis NOS

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • dementia with delirium or acute confusional state (F05)
  • • mild memory disturbance due to known physiological condition (F06.8)

Child Codes (4)

F03.9Unspecified dementia, unspecified severityF03.AUnspecified dementia, mildF03.BUnspecified dementia, moderateF03.CUnspecified dementia, severe

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Code Information

CodeF03
BillableNo — Header code
CategoryMental, Behavioral and Neurodevelopmental disorders (F01-F99)
Excludes10 rule(s)
Excludes22 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)