F03.CHeader code — not billable
Unspecified dementia, severe
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders
- Category
- F03
- Effective date
- October 1, 2026
Related codes in category F03
F03Unspecified dementiaF03.9Unspecified dementia, unspecified severityF03.90Unsp dementia, unsp severity, without beh/psych/mood/anxYesF03.91Unsp dementia, unspecified severity, with behavioral disturbF03.911Unspecified dementia, unspecified severity, with agitationYesF03.918Unsp dementia, unsp severity, with other behavioral disturbYesF03.92Unsp dementia, unspecified severity, with psychotic disturbYesF03.93Unsp dementia, unspecified severity, with mood disturbYesF03.94Unspecified dementia, unspecified severity, with anxietyYesF03.AUnspecified dementia, mildF03.A0Unspecified dementia, mild, without beh/psych/mood/anxYesF03.A1Unspecified dementia, mild, with behavioral disturbance
Frequently asked questions
What is ICD-10 code F03.C?
F03.C is an ICD-10-CM diagnosis code for Unspecified dementia, severe.
Is F03.C a billable code?
No. F03.C is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is F03.C in?
F03.C falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.
When did F03.C become effective?
F03.C has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to F03.C?
F03.C belongs to category F03, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.