All diagnostic codes
F00Organic Mental Disorders

Dementia in Alzheimer's Disease (F00)

DSM-5-TR: Major Neurocognitive Disorder Due to Alzheimer Disease

ICD-10-AM and DSM-5-TR may classify conditions differently. Refer to APA and WHO for complete diagnostic criteria.

Key Facts

ICD-10 Range

F00-F09

Subcodes

4 subcodes

Australian Prevalence

Alzheimer's disease accounts for approximately 50-70% of all dementia cases in Australia.

Global Prevalence

Most common cause of dementia worldwide, accounting for 60-70% of cases.

Overview

Alzheimer's disease is a primary degenerative cerebral disease of unknown aetiology with characteristic neuropathological and neurochemical features. The disease is insidious in onset with slow but steady deterioration.

ICD-10-AM Subcodes

CodeName
F00.0Early onset
F00.1Late onset
F00.2Atypical or mixed type
F00.9Unspecified
F00.0Onset before age 65.
F00.1Onset at age 65 or after.
F00.2Atypical presentations or mixed Alzheimer and vascular dementia.
F00.9Onset or type unspecified.

Classification Boundaries

Includes

  • Alzheimer's dementia
  • Primary degenerative dementia of the Alzheimer type

Excludes1 (coded elsewhere)

  • Senility NOS (R54)

Australian Clinical Context

Dementia is a national health priority in Australia. Dementia Australia provides support. Approximately 400,000 Australians live with dementia. The Australian Government funds dementia-specific programs including ACAT assessments and support packages.

Medicare (MBS) Pathways

Specialist Referral Pathway

Conditions in this category do not have a structured allied health Medicare pathway. Treatment is typically managed through specialist psychiatrist or physician consultations, with additional support through state/territory services or NDIS.

No structured session limit — standard specialist consultation items apply

Psychiatrist

291, 296–299, 300–308Psychiatric consultation

Geriatrician / Physician

Standard specialist consultation itemsSpecialist medical consultation

GP referral items: Standard GP referral to specialist

Eligibility: Referral to specialist required. No structured allied health pathway under Medicare for these conditions.

Not covered by Better Access. Specialist psychiatry, geriatric medicine, and aged care pathways apply. NDIS or aged care packages may provide additional support.

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Reference information sourced from MBS Online (mbsonline.gov.au). Item availability, rebates, and eligibility criteria may change. This is not billing advice — always verify current items before claiming. Last verified: April 2026.

Clinical Documentation Notes

Document cognitive domains affected, stage, behavioural symptoms, and functional impact.

References

  1. World Health Organization. ICD-10-AM.
  2. American Psychiatric Association. DSM-5-TR. 2022.

Clinical Scoring Calculator — Not a Diagnostic Tool

This tool calculates scores based on published guidelines for professional reference. It does not provide clinical diagnoses. Scores are provided as reference information only and should be interpreted by a qualified practitioner in the context of a comprehensive assessment.

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F00 Major Neurocognitive Disorder Due to Alzheimer Disease — ICD-10-AM & DSM-5-TR Reference | Grounded Scribe | Grounded Scribe