2026 ICD-10-CM Diagnosis Code G30Alzheimer's disease

ICD-10-CM Codes›G00–G99›G30-G32›G30

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

G30 is a non-billable ICD-10-CM category code for Alzheimer's disease, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G30.0, G30.1, G30.8, and G30.9.

Code Identity

ICD-10-CM Code
G30
Billable Status
No — Non-Billable Category
Code Describes
Alzheimer's disease
Chapter
G30-G32
Other degenerative diseases of the nervous system

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG30-G32Other degenerative diseases of the nervous system
CategoryG30Alzheimer's disease
This CodeG30Alzheimer's disease

Specific Coding for Alzheimer's diseaseOverview

Non-specific codes like G30 require more characters. Use one of these billable codes instead:

  • Use G30.0 for Alzheimer's disease with early onset

  • Use G30.1 for Alzheimer's disease with late onset

  • Use G30.8 for Other Alzheimer's disease

  • Use G30.9 for Alzheimer's disease, unspecified

Tabular List NotesGuidance

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

Includes

  • Alzheimer's dementia senile and presenile forms

Use Additional Code

Type 1 Excludes

  • senile degeneration of brain NEC G31.1
  • senile dementia NOS F03
  • senility NOS R41.81

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.

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 G30Overview

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

No. This is a category header that groups the codes for Alzheimer's disease, and headers cannot be submitted on claims. Claims for Alzheimer's disease need a more specific code from this category, such as G30.0, G30.1, and G30.8.