2027 ICD-10-CM Diagnosis Code F03Unspecified dementia

ICD-10-CM Codes›F01–F99›F01-F09›F03

ICD-10-CM F03
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F03 is a non-billable ICD-10-CM category code for unspecified dementia, so it cannot be submitted on claims. Use a more specific code from this category instead, such as F03.90, F03.911, F03.918, and F03.92.

Code Identity

ICD-10-CM Code
F03
Billable Status
No — Non-Billable Category
Code Describes
Unspecified dementia
Short Description
Unspecified dementia
Same as the full description in the CMS dataset.
Chapter
F01-F09
Mental disorders due to known physiological conditions

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF01-F09Mental disorders due to known physiological conditions
CategoryF03Unspecified dementia
This CodeF03Unspecified dementia

Specific Coding for Unspecified dementiaOverview

Non-specific codes like F03 require more characters. Use one of these billable codes instead:

  • F03.9 for Unspecified dementia, unspecified severity

  • Use F03.90 for Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

  • F03.91 for Unspecified dementia, unspecified severity, with behavioral disturbance

  • Use F03.92 for Unspecified dementia, unspecified severity, with psychotic disturbance

  • Use F03.93 for Unspecified dementia, unspecified severity, with mood disturbance

  • Use F03.94 for Unspecified dementia, unspecified severity, with anxiety

  • F03.A for Unspecified dementia, mild

  • Use F03.A0 for Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

  • F03.A1 for Unspecified dementia, mild, with behavioral disturbance

  • Use F03.A2 for Unspecified dementia, mild, with psychotic disturbance

  • Use F03.A3 for Unspecified dementia, mild, with mood disturbance

  • Use F03.A4 for Unspecified dementia, mild, with anxiety

  • F03.B for Unspecified dementia, moderate

  • Use F03.B0 for Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

  • F03.B1 for Unspecified dementia, moderate, with behavioral disturbance

  • Use F03.B2 for Unspecified dementia, moderate, with psychotic disturbance

  • Use F03.B3 for Unspecified dementia, moderate, with mood disturbance

  • Use F03.B4 for Unspecified dementia, moderate, with anxiety

  • F03.C for Unspecified dementia, severe

  • Use F03.C0 for Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

  • F03.C1 for Unspecified dementia, severe, with behavioral disturbance

  • Use F03.C2 for Unspecified dementia, severe, with psychotic disturbance

  • Use F03.C3 for Unspecified dementia, severe, with mood disturbance

  • Use F03.C4 for Unspecified dementia, severe, with anxiety

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F03: its own notes plus those printed at block F01-F09 and Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • 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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On F03 itself
  • dementia with delirium or acute confusional state (F05)
  • mild memory disturbance due to known physiological condition (F06.8)
From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Notes

General instructions on how these codes are used.

From Block F01-F09 Mental disorders due to known physiological conditions applies to 91 codes
  • This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F03, its category, or a range that includes it.

Applicable To 1

These notes mention F03.

  • O99.34 Other mental disorders complicating pregnancy, childbirth, and the puerperium
    Conditions in F01-F09, F20-F52 and F54-F99 names F01-F09, which includes this code

Excludes1 5

These codes carry an Excludes1 note naming F03: they are not reported together with it, unless the two conditions are unrelated.

  • F06 Other mental disorders due to known physiological condition
    unspecified dementia (F03.-)
  • F06.7 Mild neurocognitive disorder due to known physiological condition
    dementia (F01.-, F02.-, F03.-)
  • G30 Alzheimer's disease
    senile dementia NOS (F03.-)
  • G31.84 Mild cognitive impairment of uncertain or unknown etiology
    dementia (F01.-, F02.-, F03.-)
  • R54 Age-related physical debility
    senile psychosis (F03.-)

Excludes2 2

These codes carry an Excludes2 note naming F03: its condition is not part of those codes, and both may be reported when the patient has both.

  • F63.1 Pyromania
    mental disorders due to known physiological condition (F01-F09) names F01-F09, which includes this code
  • F63.2 Kleptomania
    stealing in mental disorders due to known physiological condition (F01-F09) names F01-F09, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Patient EducationClinical

Dementia

Dementia is a loss of mental functions that is severe enough to affect your daily life and activities. These functions include:

The full article covers:

  • What is dementia?
  • What are the types of dementia?
  • Who is at risk for dementia?
  • What are the symptoms of dementia?
  • How is dementia diagnosed?
  • What are the treatments for dementia?
  • Can dementia be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About F03Overview

What is the ICD-10 code for unspecified dementia?

F03 is the ICD-10-CM category for unspecified dementia, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is F03 (Unspecified dementia) a billable code?

No. This is a category header that groups the codes for unspecified dementia, and headers cannot be submitted on claims. Claims for unspecified dementia need a more specific code from this category, such as F03.90, F03.911, and F03.918.