F03 Unspecified dementia

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Unspecified dementia is F03 (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

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F03:

  • Presbyophrenia
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › senile
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › old age (senile)
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › primary degenerative
  • Depression (acute) (mental) › senile
  • Insanity, insane › senile
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › presenile
  • Disorder (of) › major neurocognitive
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • dementia with delirium or acute confusional state (F05)
  • mild memory disturbance due to known physiological condition (F06.8)

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

Official Coding Guidelines

Dementia classified by etiology/severity; code per provider documentation

The ICD-10-CM classifies dementia (categories F01, F02, and F03) on the basis of the etiology and severity (unspecified, mild, moderate or severe). Selection of the appropriate severity level requires the provider’s clinical judgment and codes should be assigned only on the basis of provider documentation (as defined in the Official Guidelines for Coding and Reporting), unless otherwise instructed by the classification.

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

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

References

Cite This Page

Reference F03 with the canonical source and edition:

F03 — Unspecified dementia. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/F03

Canonical URL: https://icd10codingpro.com/codes/F03

Related Codes

More Specific Codes

F03.9 Unspecified dementia, unspecified severity F03.A Unspecified dementia, mild F03.B Unspecified dementia, moderate F03.C Unspecified dementia, severe

All Codes in F03

Every most-specific code under F03 Unspecified dementia (24 codes):

Show the complete F03 code list
F03.90 Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety 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.A0 Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety 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.B0 Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety F03.B11 Unspecified dementia, moderate, with agitation F03.B18 Unspecified dementia, moderate, with other behavioral disturbance F03.B2 Unspecified dementia, moderate, with psychotic disturbance F03.B3 Unspecified dementia, moderate, with mood disturbance F03.B4 Unspecified dementia, moderate, with anxiety F03.C0 Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety 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
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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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