Alzheimer's Dementia ICD-10-CM Codes

Learn the ICD-10 codes used for Alzheimer's dementia and how these codes are essential for patient progress and accurate billing in healthcare settings.

By Gale Alagos on Aug 8, 2025.

Fact Checked by Karina Jimenea.

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What ICD-10 codes are used for Alzheimer's dementia?

Alzheimer's disease is a primary degenerative cerebral disease characterized by a relatively rapid deteriorating course that affects memory, thinking, behavior, and the ability to perform everyday activities.

Alzheimer's is classified among degenerative diseases of the nervous system and is considered a consequence of disorders due to brain disease or other diseases classified elsewhere.

The following are primary ICD codes for dementia in Alzheimer's disease:

G30.9 - Alzheimer's disease, unspecified: This ICD-10 code for Alzheimer's dementia is used when the specific onset of the disease cannot be determined, indicating uncertainty about the patient's symptom onset. It may be accompanied by a family history of Alzheimer's disease or other risk factors. This is also known as dementia of the Alzheimer's type without specification.
G30.0 - Alzheimer's disease with early onset: This code is for Alzheimer's disease with early onset occurring before the age of 65 and is rare, accounting for around 5% of cases. Also known as presenile dementia, Alzheimer's type.
G30.1 - Alzheimer's disease with late onset: Alzheimer's disease with late onset is the most common form, accounting for approximately 95% of cases. Symptoms generally appear after the age of 65, although they can manifest earlier in some cases. Also classified as senile dementia, Alzheimer's type.
G30.8 - Other Alzheimer's disease: This code encompasses other specified degenerative diseases of Alzheimer's that don't fit the aforementioned categories.

Which Alzheimer's dementia ICD codes are billable?

Yes, the codes mentioned are billable. They are all valid ICD-10 codes for Alzheimer's disease and related dementias. The appropriate code to use will be determined by the patient's specific symptoms and the healthcare provider's evaluation of the disease.

Clinical information

Alzheimer's dementia is characterized by a range of symptoms, including memory loss, cognitive impairment, behavioral changes, language problems, and difficulties with daily living activities.
The symptoms encompass challenges in remembering recent events, names, and faces, thinking, planning, and making decisions, as well as changes in mood, personality, behavior, language comprehension, and daily self-care tasks.
Organic personality and behavioural disorders due to brain disease, damage and dysfunction (such as dementia) may also be possible.
There is no cure for Alzheimer's dementia, but treatments can slow disease progression and improve quality of life, especially for Alzheimer's disease with onset of early to late stages.
Treatments include medications, lifestyle changes, and supportive care.
There is currently no cure for Alzheimer's dementia, but ongoing research aims to discover potential treatments and cures.
Alzheimer's dementia was first described by Alois Alzheimer in 1906, and the disease is named after him.
It is the most common form of dementia, affecting about 5.8 million people in the United States.
Alzheimer's dementia is a progressive disease, with symptoms worsening over time, and can be attributed to disorders, nonorganic or unspecified.
It is a terminal illness, and the average life expectancy after diagnosis is 8 to 10 years.

Synonyms include

Alzheimer's disease
Alzheimer's disease, atypical or mixed type
Senile dementia
Subcortical vascular dementia
Presenile dementia
Dementia of acute onset
Dementia in Creutzfeldt-Jakob disease
Disorders affecting multiple higher cortical functions
Degenerative dementia
Primary degenerative dementia
Frontotemporal dementia
Cognitive decline
Dementia in human immunodeficiency virus [HIV] disease

Other relevant codes

You may also refer to an additional code if desired:

F01.50 - Vascular dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
F01.51 - Vascular dementia, unspecified severity, with behavioral disturbance
F01.52 - Vascular dementia, unspecified severity, with psychotic disturbance
F03.90 Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
G31.09 - Other frontotemporal neurocognitive disorder

Commonly asked questions

An Alzheimer's dementia ICD-10 code should be used when a healthcare provider diagnoses a patient with Alzheimer's dementia. It helps track the patient's progress over time and is used for billing.

While there is no cure for Alzheimer's dementia, treatments aim to slow disease progression and improve quality of life. These treatments include medications to improve cognitive function, lifestyle changes like a healthy diet and exercise, and supportive care such as assistance with daily activities and emotional support.

A diagnosis code for Alzheimer's dementia is a unique code that identifies the disease. It helps track patient progress and is used for billing purposes.

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