G30.1 – Alzheimer's disease with late onset

G30.1 – Alzheimer's disease with late onset

G30.1 is an ICD-10 code used to describe Alzheimer's disease with late onset. Learn more about this diagnosis code and how to use it in your practice.

By Ericka Pingol on Jul 16, 2025.

Fact Checked by RJ Gumban.

Use Code

G30.1 diagnosis code: Alzheimer's disease with late onset

G30.1 is a code from the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) for Alzheimer's disease with late onset. This code is used to diagnose patients diagnosed with Alzheimer's disease that began after age 65.

Alzheimer's is a degenerative disease. It is a progressive, irreversible disease affecting the brain cells and their ability to communicate. Symptoms can include memory loss, confusion, difficulty finding words, trouble understanding instructions, changes in behavior or mood, and impaired judgment. 

Is G30.1 billable?

Yes, G30.1 is billable for medical services in the United States.

Clinical information

Alzheimer's is a progressive neurological disorder that causes memory loss, confusion, and difficulty with daily tasks. It is the most common cause of dementia in people over 65 years old. It is estimated to affect more than 6 million Americans and is the fifth leading cause of death for those aged 65 and older in the United States.

People with late-onset Alzheimer's disease may experience memory loss, language difficulties, difficulty with problem-solving and judgment, confusion, changes in personality or behavior, and difficulty performing everyday activities independently. As the disease progresses, people may become unable to care for themselves and require assistance with activities of daily living. 

Although there is no cure for G30.1, specific treatments and interventions may help slow its progression or ease some symptoms. These include medications such as cholinesterase inhibitors, which can help improve thinking and memory, and other treatments such as cognitive-behavioral therapy or lifestyle modifications to help manage the symptoms of G30.1.

Synonyms include

  • Senile dementia
  • Dementia of the Alzheimer's type
  • Alzheimer's syndrome
  • Alzheimer's dementia
  • Primary degenerative dementia
  • Chronic brain syndrome
  • Neurocognitive disorder
  • Age-related cognitive decline due to known physiological condition
  • Alzheimer's disease accompanied by nervous system problems
  • Alzheimer's as one of the diseases classified under degenerative diseases
  • Mild neurocognitive disorder as sign of Alzheimer's disease
  • Alzheimer's with other specified degenerative diseases

Popular search terms for G30.1

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  • G30.1 diagnosis codes
  • ICD-10 code for Alzheimer's disease with late onset
  • ICD-10 Alzheimer's code (dementia included)

Other ICD-10 codes related to Alzheimer's disease

  • G30.0 - Alzheimer's disease with early onset
  • G31.1 - Senile degeneration of brain NEC (not elsewhere classified)
  • F03. 91 - Unspecified dementia, unspecified severity, with behavioral disturbance
  • F03.911 - Unspecified dementia, unspecified severity, with agitation
  • F03.918 - Unspecified dementia, unspecified severity, with other behavioral disturbance
  • F03.92 - Unspecified dementia, unspecified severity, with psychotic disturbance

Related ICDs

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