Psychological and Behavioural Disorders Associated with Sexual Development and Orientation (F66)
DSM-5-TR: No DSM-5-TR equivalent (removed)
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
F60-F69
Subcodes
5 subcodes
Overview
This category covers psychological distress related to uncertainty about sexual orientation or sexual development. Importantly, sexual orientation itself (whether heterosexual, homosexual, or bisexual) is not considered a disorder.
ICD-10-AM Subcodes
| Code | Name | Description |
|---|---|---|
| F66.0 | Sexual maturation disorder | |
| F66.1 | Egodystonic sexual orientation | |
| F66.2 | Sexual relationship disorder | |
| F66.8 | Other psychosexual development disorders | |
| F66.9 | Psychosexual development disorder, unspecified |
Classification Boundaries
Includes
- Sexual maturation disorder
- Egodystonic sexual orientation
- Sexual relationship disorder
Excludes1 (coded elsewhere)
- Gender identity disorders (F64)
Australian Clinical Context
Sexual orientation is not classified as a disorder in Australian clinical practice. Conversion therapy is banned in several Australian jurisdictions. This code is retained in ICD-10-AM but is considered outdated. Affirming approaches are the standard of care.
Medicare (MBS) Pathways
Better Access to Mental Health Care
The primary Medicare pathway for mental health treatment in Australia. Requires a GP Mental Health Treatment Plan (MHTP) referral. Available for any clinically diagnosed mental disorder.
| Provider Type | MBS Items | Session Type |
|---|---|---|
| Clinical Psychologist | 80000–80025 | Psychological therapy (higher rebate) |
| Registered Psychologist | 80100–80123 | Focused psychological strategies |
| Occupational Therapist | 80125–80145 | Focused psychological strategies |
| Social Worker | 80150–80175 | Focused psychological strategies |
| Psychiatrist | 291, 296–299, 300–308 | Psychiatric consultation |
Clinical Psychologist
Registered Psychologist
Occupational Therapist
Social Worker
GP referral items: 2700, 2701, 2715, 2717
Eligibility: Any clinically diagnosed mental disorder as defined by WHO ICD-10 Chapter V. Requires a GP or psychiatrist referral.
Exclusions:
- Intellectual disability (use Complex Neurodevelopmental Disorder pathway or specialist referral)
- Dementia and organic mental disorders (use specialist referral pathway)
- Tobacco use disorder
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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
This category is considered outdated and stigmatising. ICD-11 and DSM-5-TR have removed categories pathologising sexual orientation. Use only when required for ICD-10-AM coding. Affirming, non-pathologising clinical approaches are mandatory.
Related Diagnostic Codes
ICD-10-AM diagnostic codes commonly associated with the Psychological and Behavioural Disorders Associated with Sexual Development and Orientation (F66).
References
- World Health Organization. ICD-10-AM.
- American Psychiatric Association. DSM-5-TR. 2022.
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