F03.B1
Unspecified dementia, moderate, with behavioral disturbance
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This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
dementia with delirium or acute confusional state (F05) mild memory disturbance due to known physiological condition (F06.8)
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
This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
disorders of psychological development
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Official Guidelines for F03.B1
FY 2026 ›Sections that reference F03.B1
Sections whose FY 2026 text names F03.B1, its F03 category, or a range containing it — the chapter guidance above is the authoritative source.