F03 ICD-10-CM Code: Unspecified dementia
A clear reference for the official code description, hierarchy, and related coding information from the April 2026 U.S. release.
Code definition
Official description
F03Unspecified dementia
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where F03 sits
- 1
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- 2
Section
Mental disorders due to known physiological conditions (F01-F09)
- 3
Category F03
Unspecified dementia
- 4
Code F03
Unspecified dementia
More specific choices
Codes under F03
F03 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
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
Code first
No “code first” instruction is listed for F03.
Use additional code
No “use additional code” instruction is listed for F03.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for F03.
Excludes2
Conditions not included here that may be reported separately when present.
- dementia with delirium or acute confusional state (F05)
- mild memory disturbance due to known physiological condition (F06.8)
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code F03 mean?
F03 is the April 2026 U.S. ICD-10-CM code for “Unspecified dementia.”
Is F03 a billable or specific ICD-10-CM code?
No. F03 has more specific child codes in the April 2026 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is F03 located in ICD-10-CM?
F03 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Mental disorders due to known physiological conditions (F01-F09) (F01–F09), under category F03, Unspecified dementia.
What coding notes are listed for F03?
Its listed inclusion terms are 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. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: dementia with delirium or acute confusional state (F05); mild memory disturbance due to known physiological condition (F06.8).
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