Unspecified Dementia (F03)
DSM-5-TR: Unspecified Major Neurocognitive Disorder
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
Overview
Used when dementia is present but the specific aetiology cannot be determined.
Classification Boundaries
Includes
- Presenile dementia NOS
- Senile dementia NOS
- Presenile psychosis NOS
- Primary degenerative dementia NOS
Excludes1 (coded elsewhere)
- Senility NOS (R54)
Australian Clinical Context
Use when full diagnostic workup is pending or when aetiology remains unclear despite investigation.
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.
| Provider Type | MBS Items | Session Type |
|---|---|---|
| Psychiatrist | 291, 296–299, 300–308 | Psychiatric consultation |
| Geriatrician / Physician | Standard specialist consultation items | Specialist medical consultation |
Geriatrician / Physician
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 referral for diagnostic clarification is recommended.
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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
Assign a more specific code once the aetiology is established. Document reason for unspecified coding.
Related Diagnostic Codes
ICD-10-AM diagnostic codes commonly associated with the Unspecified Dementia (F03).
References
- World Health Organization. ICD-10-AM.
- 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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