F03.9
Unspecified dementia, unspecified severity
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 3 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 3 never code together
Instructional notes 9
F03code
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
F01-F09block
Notes
- 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.
F01-F99chapter
Includes
- disorders of psychological development
Index entries leading here 1
- Disorder (of) — see also Disease
- major neurocognitive F03
Alongside this code 3 same parent — F03
Subordinate codes 5
F03.90 Unsp dementia, unsp severity, without beh/psych/mood/anx F03.91 Unsp dementia, unspecified severity, with behavioral disturb F03.92 Unsp dementia, unspecified severity, with psychotic disturb F03.93 Unsp dementia, unspecified severity, with mood disturb F03.94 Unspecified dementia, unspecified severity, with anxiety
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.