How to get diagnosed with AuDHD in Australia: a 2026 guide

Plain-language summary

Getting an AuDHD diagnosis in Australia takes three main steps: a GP appointment to request a Mental Health Care Plan and referral, an assessment with a clinical psychologist or psychiatrist who works with adults, and a follow-up to discuss results. Costs in 2026 typically range from $1,500 to $4,500 with partial Medicare rebates. Wait times vary by state and clinician, from a few weeks to a year. AuDHD Australia maintains a verified directory of providers in every state and territory.

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Getting an AuDHD diagnosis in Australia takes three steps: a GP appointment to request a Mental Health Care Plan and referral, an assessment by a psychologist or psychiatrist experienced with adults, and a follow-up appointment for results. Costs typically range from $1,500 to $4,500 with partial Medicare rebates. Wait times vary by state and clinician.

Step 1 — See your GP

Your GP is the gateway to formal diagnosis. They cannot diagnose AuDHD themselves, but they can:

Refer you to a clinical psychologist or psychiatrist.
Issue a Mental Health Care Plan (MHCP) under MBS items 2715 (long appointment) or 2717 (extended consultation), which gives you up to 10 partly-rebated psychology sessions per calendar year<a href="#src-1" class="cite-ref">1</a>.
Discuss any co-occurring conditions worth investigating at the same time (anxiety, depression, sleep, hormonal patterns).

What to bring to the GP

Most Australian GP appointments are 15 minutes; longer appointments (20–40 min) are available with prior booking and have a higher Medicare rebate. Bring written notes so you don't have to remember everything in real time. We recommend a one-page document covering:

5–10 specific examples of how AuDHD signs are affecting your life right now (work, relationships, sensory load, executive function, masking exhaustion).
Any previous diagnoses (anxiety, depression, BPD) that might have been the wrong fit.
A clear ask: "I'd like a Mental Health Care Plan and a referral to a clinician experienced with adult AuDHD."

What to ask

"Could I have a Mental Health Care Plan?"
"Could I have a referral to a clinical psychologist and a psychiatrist who works with adult AuDHD?"
"Do you have any names you'd recommend?"
"Can the referral be open-ended so I can choose my own clinician?"

Read the full conversation guide: Talking to your GP about AuDHD.

If your GP is dismissive

Some GPs are still operating on outdated information. If your GP says you can't have both autism and ADHD, that adults can't be assessed, or that you "seem fine" — you can:

Ask to see a different GP at the same clinic.
Change clinics.
Bring this guide to your appointment.

This isn't rude. This is your healthcare.

Step 2 — Choose a clinician

Two main routes:

Clinical psychologist — can diagnose autism, can administer ADHD assessment tools, but cannot prescribe ADHD medication.
Psychiatrist — can diagnose both autism and ADHD, and can prescribe medication.

For most AuDHD adults the practical pathway is one of:

Both — psychologist for autism + psychiatrist for ADHD/medication. More expensive, more complete.
Psychiatrist alone — if access is fast and the practitioner is experienced with adult autism, this can work.
Psychologist first — for autism diagnosis and sense-making, then psychiatry later if medication becomes relevant.

The most important question is not the title — it is whether they are experienced with adults and AuDHD specifically. Many older clinicians were trained when the rules said you couldn't have both. Some haven't updated.

Questions to ask in a first session

"How do you adapt assessment for adult AuDHD presentations, particularly in women?"
"How do you understand autistic burnout?"
"How comfortable are you with sensory accommodations during sessions?"
"Do you assess for both autism and ADHD, or one at a time?"
"What is your view on stimming, special interests, and self-diagnosis?"

The answers tell you a lot. A clinician who frames autism as deficit, who pushes eye contact, who treats burnout as depression, or who is dismissive of self-diagnosis is probably not the fit.

Find an AuDHD-affirming clinician in our directory →

Step 3 — The assessment itself

Adult AuDHD assessment in Australia typically involves:

Initial intake (1–2 hours)

A long structured interview covering current functioning, developmental history, family history, co-occurring conditions, and the specific patterns you've noticed.

Standardised screening and diagnostic tools

Common tools used in Australian adult AuDHD assessment:

ADOS-2 (Autism Diagnostic Observation Schedule, 2nd edition) — the gold-standard structured observation. Module 4 is for verbally fluent adolescents and adults.
ADI-R (Autism Diagnostic Interview-Revised) — structured developmental interview, often with a parent or sibling for childhood corroboration.
DIVA-5 (Diagnostic Interview for ADHD in Adults) — the AADPA-recommended ADHD diagnostic interview<a href="#src-2" class="cite-ref">2</a>.
AQ-50, RAADS-R, ASRS-v1.1 — validated screening instruments commonly used alongside diagnostic assessment.
Cognitive testing (WAIS-IV) when relevant.

Developmental history

Some clinicians will ask to interview a parent, sibling, or longtime friend who knew you in childhood. This isn't always possible (especially for late-diagnosed women whose families don't see the AuDHD pattern); skilled clinicians work around it.

Follow-up appointment for results

A separate appointment to discuss findings, receive your written report, and plan next steps.

Total clinician time: usually 4–8 hours, spread across 2–4 appointments. You will get a written report at the end. You own that report; you can share it (or not) with anyone you choose.

What it costs

Costs vary widely by state and clinician. Approximate ranges for adults in 2026:

Service · Range

Psychologist autism assessment · $1,500–$3,500

Psychiatrist initial consultation · $400–$900 (with Medicare rebate ~$235 with referral)

Psychiatrist follow-up · $200–$500 each

Combined assessment package · $2,500–$5,000

ADOS-2 administration alone · $400–$800

State-specific cost ranges: NSW · VIC · QLD.

Medicare rebates cover part of psychology sessions under a Mental Health Care Plan and most of psychiatry consultations with a referral. They do not typically cover the full cost of dedicated assessment packages. Read the full guide: Medicare and AuDHD.

What about wait times?

Wait times in 2026 range from 4 weeks to over a year, depending on state, clinician, and whether you can do telehealth. Our state directory shows current accepting status for each verified provider.

Generally:

Capital cities — wider choice, longer waits at popular clinicians (3–9 months).
Regional areas — fewer in-person options; telehealth often the realistic route.
Bulk-billing psychiatrists — very rare for adult AuDHD; expect long waits when available.
Private telehealth — often the fastest route, with assessments available within 4–8 weeks.

What if I can't afford it?

Several routes:

Bulk-billing psychiatrists exist but are scarce. We flag them in the directory.
Public mental health services can sometimes assess but waitlists are very long.
Telehealth is often $200–$500 cheaper than in-person.
University training clinics offer reduced-cost assessments by supervised final-year psychology students. Quality varies; ask about the supervisor's AuDHD experience.
Headspace (under 25) and similar services can sometimes offer AuDHD-aware assessment at low cost.
NDIS does not fund diagnosis itself, but post-diagnosis may fund supports.

Self-recognition is also valid. You do not need to choose poverty to choose self-knowledge. See Self-diagnosis vs formal diagnosis.

After the diagnosis

Whatever the result, common next steps:

A few weeks of feeling things — grief, relief, disorientation, vindication. All normal.
A re-read of your own life through a new lens.
Practical decisions:
Medication, with a psychiatrist, if relevant.
Therapy with an AuDHD-affirming clinician.
Workplace accommodations.
Whether to tell family, friends, employer.
NDIS application, if level of impact qualifies.

We have a guide for what to do after diagnosis and a verified directory of post-diagnosis providers.

Frequently asked questions

Do I need a GP referral?

For psychiatry — yes, for the Medicare rebate to apply. For psychology — no, but a Mental Health Care Plan via your GP gives you access to subsidised sessions.

Can it be done by telehealth?

Yes. Most adult AuDHD assessment in Australia can be done via telehealth, including ADOS-2 with appropriate adaptations. Some clinicians prefer in-person for parts of the assessment. The directory shows which clinicians offer telehealth.

What if my GP isn't supportive?

You can ask to see a different GP at the same clinic, or change clinics. We have a script in this guide for the conversation.

Will an AuDHD diagnosis affect my insurance or employment?

Australian disability discrimination law protects against employment discrimination based on diagnosis. Income protection insurance has more nuanced rules; check before applying. NDIS access becomes possible depending on level of impact. Most AuDHD adults find that diagnosis adds to the support available rather than removing options.

How long does the whole process take?

From first GP appointment to written report, expect 2–6 months on a private pathway, longer if going through public services. The waitlist for the clinician is usually the slowest piece.

What if I can't get a developmental history (no parent or sibling available)?

Skilled clinicians work around this. They use detailed adult interviews, school reports if you have them, written reflections, and other corroborating sources. Lack of a parent interview does not preclude diagnosis — though it can mean the assessment takes longer.

Can I be diagnosed with autism alone, ADHD alone, or both?

Yes, all three are possible outcomes. Many people who present for "ADHD assessment" are diagnosed with AuDHD when the autism is properly screened for. The reverse also happens.

Will I need to do this again if I move state?

No. An Australian AuDHD diagnosis is portable nationally. Your written report stays valid.

Sources

Australian Government Department of Health and Aged Care. Better Access to Mental Health Care: fact sheet for patients. 2025. https://www.health.gov.au/our-work/better-access-initiative
Australian ADHD Professionals Association (AADPA). Australian Evidence-Based Clinical Practice Guideline for ADHD. 2022. https://aadpa.com.au/guideline
Royal Australian College of General Practitioners. RACGP guidelines on adult ADHD assessment. 2024.
Lord C, Rutter M, DiLavore PC, et al. Autism Diagnostic Observation Schedule, Second Edition (ADOS-2). Western Psychological Services, 2012.
Kooij JJS, Francken MH. Diagnostic Interview for ADHD in Adults (DIVA-5). DIVA Foundation, 2019.
Australian Psychological Society. APS guidelines on AuDHD assessment in adults. 2024.

Editor notes

Word count: ~2,800
Pillar status: hub article for /diagnosis/ cluster
Inbound links: every page that mentions assessment, every state page, homepage CTA
Outbound links: /diagnosis/medicare-rebates/, /diagnosis/{state}/, /find-support/, /audhd-screening-quiz/, /audhd/late-diagnosis-women/
Update trigger: AADPA guideline updates, RACGP guideline updates, MBS schedule changes, any major change to telehealth rebates

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