2026 ICD-10-CM Diagnosis Code G30.8Other Alzheimer's disease

ICD-10-CM Codes›G00–G99›G30-G32›G30

ICD-10-CM G30.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G30.8 is a billable ICD-10-CM diagnosis code for other Alzheimer's disease. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as frontal variant non-amnestic Alzheimer disease. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurocognitive disorders.

Code Identity

ICD-10-CM Code
G30.8
Billable Status
Yes — Valid for Submission
Code Describes
Other Alzheimer's disease
Short Description
Other Alzheimer's disease
Same as the full description in the CMS dataset.
Parent Code
G30
Alzheimer's disease

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG30-G32Other degenerative diseases of the nervous system
CategoryG30Alzheimer's disease
This CodeG30.8Other Alzheimer's disease

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Frontal variant non-amnestic Alzheimer disease
  • Logopenic non-amnestic Alzheimer disease
  • Non-amnestic Alzheimer disease

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.

    • Disease, diseased
      • Alzheimer's
        • specified NEC
    • Disease, diseased
      • Alzheimer's
        • specified NEC
          • with behavioral disturbance

Clinical ClassificationClinical

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

CCSR NVS011
Neurocognitive disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Alzheimer's Disease

Alzheimer's disease (AD) is the most common form of dementia among older people. Dementia is a brain disorder that seriously affects thinking and memory skills. If you have AD, it can impair your ability to reason or learn new skills until it becomes difficult to complete daily activities.

The full article covers:

  • What is Alzheimer's disease?
  • What are the symptoms of Alzheimer's disease?
  • Who is more likely to develop Alzheimer's disease?
  • How is Alzheimer's disease diagnosed?
  • What are the treatments for Alzheimer's disease?
  • Can Alzheimer's disease be prevented?

Read the full article at MedlinePlus

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

Convert G30.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
331.0 Alzheimer's disease
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G30.8Overview

Is G30.8 (Alzheimer's disease) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other Alzheimer's disease on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G30.8?

Under the General Equivalence Mappings, other Alzheimer's disease converts to ICD-9-CM 331.0 (Alzheimer's disease). The mapping is approximate, so confirm the match fits the documentation.

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.