F03 — Unspecified dementia
F03 is a non-billable header ICD-10-CM code for unspecified dementia. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- 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
Other codes that can never be billed with F03
These codes carry an Excludes1 note pointing at F03. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F03 alone.
Risk adjustment
F03 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How F03 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F03.
- Presbyophrenia
- Dementia›old age(senile)
- Dementia›presenile
- Dementia›primary degenerative
- Dementia›senile
- Depression›senile
- Insanity, insane›senile
- Melancholia›senile
- Old age›dementia
- Paranoia›senile
- Paranoid›dementia(senile)
- Presenile›dementia
Code to one of these instead F03
4 child codes. Green means billable.
Questions about F03
- Is F03 a billable ICD-10-CM code?
- No. F03 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does F03 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Mental disorders due to known physiological conditions (F01-F09).