2026 ICD-10-CM Diagnosis Code F02.A0Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

ICD-10-CM Codes›F01–F99›F01-F09›F02

ICD-10-CM F02.A0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F02.A0 is a billable ICD-10-CM diagnosis code for dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurocognitive disorders.

Code Identity

ICD-10-CM Code
F02.A0
Billable Status
Yes — Valid for Submission
Code Describes
Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
Short Description
Dem in other dis classd elswhr, mild, w/o beh/psych/mood/anx
Parent Code
F02.A
Dementia in other diseases classified elsewhere, mild

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF01-F09Mental disorders due to known physiological conditions
CategoryF02Dementia in other diseases classified elsewhere
This CodeF02.A0Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

Code EditsBilling

Medicare Code Editor checks that affect claim validity for F02.A0.

Manifestation diagnoses
Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Dementia in other diseases classified elsewhere, mild, NOS
  • Major neurocognitive disorder in other diseases classified elsewhere, mild, NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dementia(degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)
      • in (due to)
        • diseases specified elsewhere (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)
          • mild

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS011
Neurocognitive disorders
Default principal diagnosis: inpatient No · outpatient No

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 History & ChangesHistory

Replacement F02.A0 replaces the following previously assigned code(s):

  • F02.80 - Dem in oth dis classd elswhr,unsp sev,w/o beh/psych/mood/anx
  • F02.80 - Dementia in oth diseases classd elswhr w/o behavrl disturb
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F02.A0Overview

Is F02.A0 (Dementia in other diseases classified elsewhere, mild) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can F02.A0 be a principal diagnosis?

No. This is a manifestation code: dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.