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v1.0.0
ICD-10 Guide
DiagnosesAlzheimer'S Disease

Alzheimer'S Disease

ICD-10 Coding for Alzheimer's Disease(G30.0, G30.1, F02.80, F02.81)

PRIMARY SPECIALTYNeurology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Alzheimer'S Disease?
Essential facts and insights about Alzheimer's Disease

Key Clinical Considerations:

  • Memory loss that disrupts daily life, particularly affecting the ability to learn new information or recall recent events.
  • Presence of cognitive decline in one or more areas: language, executive function, visuospatial skills, or personality changes.
  • No evidence of delirium or other mental disorders that could explain the cognitive decline.
  • Imaging studies (e.g., MRI or CT scans) may show brain atrophy, particularly in the hippocampus and temporal lobes.
  • Severity can be staged using the Global Deterioration Scale (GDS) or Clinical Dementia Rating (CDR) scale.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Complete medical history including onset and progression of symptoms.
  • Use of specific terms such as 'Alzheimer's disease' and 'dementia' in documentation.
  • Examples include documenting cognitive assessments, neuropsychological testing results, and functional status.
  • Medical necessity must be established through documentation of symptoms and their impact on daily living.
  • Quality measures may include documentation of cognitive assessments and care planning.

Coding Guidelines

Usage Guidelines & Examples

  • Use G30.0 for early onset Alzheimer's disease and G30.1 for late onset; F02.80 and F02.81 for Alzheimer's disease with behavioral disturbances.
  • Do not use these codes for other types of dementia such as vascular dementia (I67.4) or frontotemporal dementia (G31.0).
  • G30 codes are specific to Alzheimer's, while F02 codes are for dementia due to Alzheimer's with behavioral disturbances.
  • Common errors include misclassifying the type of dementia or failing to document the severity.
  • In complex cases, ensure to document the specific type of dementia and any co-existing conditions.

Code Exclusions

Important Exclusions

  • Excludes other types of dementia such as vascular dementia (I67.4) and frontotemporal dementia (G31.0).
  • Alternative codes for excluded conditions include G31.83 for Lewy body dementia.
  • Conditions are excluded because they have different underlying pathophysiologies and treatment approaches.
  • Common mistakes include coding Alzheimer's when the patient has a different type of dementia.
  • Related but distinct conditions include mild cognitive impairment (G31.84) and other neurodegenerative disorders.

Related ICD-10 Codes

Primary Codes
G30.0
Alzheimer's disease, early onset
G30.1
Alzheimer's disease, late onset
F02.80
Dementia in Alzheimer's disease without behavioral disturbance
F02.81
Dementia in Alzheimer's disease with behavioral disturbance
Ancillary Codes
Z91.83
Differential Codes
F01.50
G31.83

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurology

Specialty Applications

  • Primarily applies to patients diagnosed with Alzheimer's disease.
  • Commonly affects older adults, but early onset can occur in individuals as young as 30.
  • Clinical settings include outpatient neurology clinics, inpatient hospitals, and memory care facilities.
  • Neurology is the primary specialty involved, but geriatric medicine and psychiatry may also be relevant.
  • Used in treatment contexts such as cognitive rehabilitation, medication management, and supportive care.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with Alzheimer's disease based on clinical findings of memory loss and cognitive decline.'

Template 2

Template: 'Clinical presentation consistent with Alzheimer's disease including memory impairment and disorientation.'

Template 3

Template: 'Diagnostic criteria for Alzheimer's disease met as evidenced by neuropsychological testing and imaging results.'

Template 4

Template: 'Treatment plan initiated for Alzheimer's disease with cognitive enhancers and supportive therapy.'

Template 5

Template: 'Follow-up care for Alzheimer's disease including monitoring cognitive function and behavioral changes.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Documentation should include a detailed history of cognitive decline, assessment results, and impact on daily living.

How does this differ from similar diagnoses?

Alzheimer's disease is characterized by specific patterns of memory loss and cognitive decline, distinct from other dementias.

What are common billing considerations?

Ensure that documentation supports the diagnosis and reflects the medical necessity for treatment and assessments.

What procedures are typically associated?

Commonly associated procedures include neuropsychological testing, cognitive assessments, and imaging studies.

Are there any quality reporting implications?

Quality measures may include tracking cognitive assessments and care planning for patients with Alzheimer's.