F03.C Unspecified dementia, severe

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Unspecified dementia, severe is F03.C (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
F01-F09: Mental disorders due to known physiological conditions (F01-F09)
Category F03
33 codes (24 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a
Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

F03 Unspecified dementia

More Specific Codes

F03.C0 Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety F03.C1 Unspecified dementia, severe, with behavioral disturbance F03.C11 Unspecified dementia, severe, with agitation F03.C18 Unspecified dementia, severe, with other behavioral disturbance F03.C2 Unspecified dementia, severe, with psychotic disturbance F03.C3 Unspecified dementia, severe, with mood disturbance F03.C4 Unspecified dementia, severe, with anxiety

Related Codes in F03

F03 Unspecified dementia F03.9 Unspecified dementia, unspecified severity F03.90 Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety F03.91 Unspecified dementia, unspecified severity, with behavioral disturbance F03.911 Unspecified dementia, unspecified severity, with agitation F03.918 Unspecified dementia, unspecified severity, with other behavioral disturbance F03.92 Unspecified dementia, unspecified severity, with psychotic disturbance F03.93 Unspecified dementia, unspecified severity, with mood disturbance F03.94 Unspecified dementia, unspecified severity, with anxiety F03.A Unspecified dementia, mild F03.A0 Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety F03.A1 Unspecified dementia, mild, with behavioral disturbance F03.A11 Unspecified dementia, mild, with agitation F03.A18 Unspecified dementia, mild, with other behavioral disturbance F03.A2 Unspecified dementia, mild, with psychotic disturbance F03.A3 Unspecified dementia, mild, with mood disturbance F03.A4 Unspecified dementia, mild, with anxiety F03.B Unspecified dementia, moderate F03.B0 Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety F03.B1 Unspecified dementia, moderate, with behavioral disturbance
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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