2026 ICD-10-CM Diagnosis Code F02.B4Dementia in other diseases classified elsewhere, moderate, with anxiety

ICD-10-CM Codes›F01–F99›F01-F09›F02

ICD-10-CM F02.B4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F02.B4 is a billable ICD-10-CM diagnosis code for dementia in other diseases classified elsewhere, moderate, with 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.B4
Billable Status
Yes — Valid for Submission
Code Describes
Dementia in other diseases classified elsewhere, moderate, with anxiety
Short Description
Dem in other diseases classd elswhr, moderate, with anxiety
Parent Code
F02.B
Dementia in other diseases classified elsewhere, moderate

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF01-F09Mental disorders due to known physiological conditions
CategoryF02Dementia in other diseases classified elsewhere
This CodeF02.B4Dementia in other diseases classified elsewhere, moderate, with anxiety

Code EditsBilling

Medicare Code Editor checks that affect claim validity for F02.B4.

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

  • Major neurocognitive disorder in other diseases classified elsewhere, moderate, with anxiety

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)
          • moderate
            • with
              • anxiety

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

Anxiety

Anxiety is a feeling of fear, dread, and uneasiness. It might cause you to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress. For example, you might feel anxious when faced with a difficult problem at work, before taking a test, or before making an important decision.

The full article covers:

  • What is anxiety?
  • What are anxiety disorders?
  • What are the types of anxiety disorders?
  • What causes anxiety disorders?
  • Who is at risk for anxiety disorders?
  • What are the symptoms of anxiety disorders?
  • How are anxiety disorders diagnosed?
  • What are the treatments for anxiety disorders?

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement F02.B4 replaces the following previously assigned code(s):

  • F02.81 - Dem in other dis classd elswhr, unsp sev, with beh distrb
  • F02.81 - Dementia in oth diseases classd elswhr w behavioral 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.B4Overview

Is F02.B4 (Dementia in other diseases classified elsewhere, moderate) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report dementia in other diseases classified elsewhere, moderate, with anxiety on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can F02.B4 be a principal diagnosis?

No. This is a manifestation code: dementia in other diseases classified elsewhere, moderate, with 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.