Mostly, no. The policy wordings of eight UK private health insurers each exclude treatment for ADHD and autism by name, and six of the eight also exclude the assessment or diagnostic tests, so with most of them a policy is not a way to pay for an ADHD or autism assessment. If you are weighing up whether a policy is worth buying with an assessment in mind, for yourself or a child, an FCA-authorised broker can talk a named insurer's current wording through with you before you spend anything; asking for that free call-back takes one short form on this page.
What each insurer's wording says about ADHD and autism
The exclusion goes by a different name in almost every document, which is why the heading column below matters: the words under it decide whether an assessment is caught or only treatment is.
| Insurer and document | Heading and PDF page | What the clause names |
|---|---|---|
| AXA Health, Personal Health membership handbook, October 2024 (copy hosted by more-health.co.uk) | "Learning and developmental disorders", page 27 | "treatment, investigations, assessment or grading", with ADHD and autistic spectrum disorder among the examples |
| Aviva, Healthier Solutions terms and conditions, print code GEN6842 03/2026 | "Mental health" benefit term, page 13 | "diagnostic tests to treat or assess", with ADHD and autism spectrum disorder as examples |
| Freedom, Elite Policyholder's Guide to Cover, footer dated 01/04/2025 | "Behavioural, developmental, educational and learning problems", page 22 | "psychological or educational assessments" |
| Saga, HealthPlan Super policy book, May 2025 | "What we do not pay for", item (ff), page 17 | "assessment or grading of such problems" |
| The Exeter, Health+ Policy Document, MKTG762 July 2026 | "Learning and developmental disorders", page 22 | "Treatment, investigations, assessment or grading" |
| Vitality, Membership Guide, print code VHTCR0002 08/2024 (copy hosted by mytribeinsurance.co.uk) | "Other medical conditions" list, page 27 | "investigations and assessments" |
| Bupa, Bupa By You policy guide, BINS 14718, for policies starting after 1 May 2024 | "Learning difficulties, behavioural and development conditions", page 33 | "Treatment" for behavioural conditions |
| National Friendly, My PMI Policy Conditions, PMI PC 08.26 | "Developmental/behavioural conditions", page 13 | "treatment" for behavioural conditions such as ADHD and autism; "treatment or investigations" for developmental ones |
Page numbers are the PDF's own, not the number printed on the page. Aviva's April 2025 issue (GEN6842 04/2025) carries the same sentence on its page 13, so a policy on either issue reads the same here; the others came from the insurers' own sites unless a host is named.
Is the assessment excluded, or only the treatment?
Six of the eight say outright that assessment is caught. AXA Health's handbook says "We do not cover any treatment, investigations, assessment or grading to do with" behavioural problems, lists "autistic spectrum disorder" and "attention deficit hyperactivity disorder (ADHD)" among its examples, and adds "please call if you would like to know if a condition is covered". The Exeter's row opens with the same four words. Aviva's list of what it does not cover includes "treatment, including diagnostic tests to treat or assess learning difficulties or developmental or behavioural problems such as attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder". Freedom's clause reaches "psychological or educational assessments", Saga's ends "including assessment or grading of such problems", and Vitality's reads "Treatment, including investigations and assessments relating to neurodevelopmental conditions", with ADHD and Autism as examples.
Bupa's line is built around treatment: "Treatment for behavioural conditions, such as attention deficit hyperactivity disorder (ADHD), and autistic spectrum disorder (ASD) isn't covered." National Friendly puts ADHD, Asperger syndrome and autism under a behavioural sentence that also says "treatment"; its separate developmental sentence is the one that adds "investigations". Neither insurer's sentences settle whether a specialist assessment on its own, ahead of any treatment, would be paid for; a broker can ask both of them during the call-back, at no charge.
Does a mental health add-on change any of this?
Not in the two documents that put the subjects close together. Aviva's ADHD and autism sentence sits inside its "Mental health" benefit term, the same term that also rules out "chronic mental health conditions", and its mental health treatment option points back to that term. The exclusion travels with the mental health cover rather than being lifted by it.
The Exeter shows the two ideas on one page. Its "Mental and psychological treatment" exclusion says it "does not apply if your policy includes the mental health benefit add-on"; the "Learning and developmental disorders" row a few lines above carries no such exception. Cover for anxiety, depression and other acute conditions is a different question from an ADHD or autism assessment: best health insurance for mental health sets that cover out insurer by insurer, and what Bupa's mental health benefit does pay for has its own page.
A child's speech therapy: the narrow carve-out
Two of the wordings make room for speech therapy linked to developmental delay. Aviva's speech therapy benefit runs "for each child covered by the policy, until the renewal date following their 18th birthday" and "includes cover for speech therapy needed for developmental delay" (March 2026 issue, page 15); its benefit table puts GP-referred speech therapy for children at "Up to 2 speech therapy sessions" (page 6). AXA Health's core cover table allows "Up to six sessions a year" for children aged 14 and under who need speech therapy because of developmental delay (page 5), and its speech therapy rule on page 30 pays "so long as they do not have any speech therapy sessions booked or are on a waiting list for speech therapy when their cover starts".
That is speech therapy, not an ADHD or autism assessment, and both insurers' learning and behavioural exclusions stay in place. For a child already on a waiting list, a condition like AXA's bites from the first day of cover. What a policy for a child costs is on what a child's health insurance plan costs, and Aviva's own wording on GP-requested tests and specialist visits is worked through on Aviva health insurance and ADHD.
Buying when a diagnosis is already in the picture
If WPA, or any insurer missing from the table, is on your shortlist, the broker who rings back can ask it directly how a neurodevelopmental assessment would be handled, without charge to you.
Insurers also limit cover for conditions that began before the policy did, and how depends on the underwriting route; health insurance and pre-existing conditions explains the main routes. For ADHD and autism, though, the clauses in the table are the more basic point: they are written as exclusions of the conditions themselves, not as rules about when a condition began. A policy bought for other reasons, such as a hospital stay or cancer cover, can still be worth having, and that is a separate decision from how an assessment gets paid for.
Questions to put on the call-back
Eight sets of terms are a lot to read alone; once you send the form, an FCA-authorised broker will phone at no cost and lay the insurers' assessment wording side by side. Worth asking:
- For the insurers you can quote, does the exclusion name assessment and diagnostic tests, or only treatment?
- Is the quote written on the same issue of the terms you are reading from?
- For a child, what do the speech therapy lines allow, and does a current waiting list matter?
- Leaving the assessment aside, what would this policy pay for that I would actually use?
ADHD and autism assessment cover: questions people ask
Does private health insurance cover an ADHD diagnosis in the UK?
Not in six of the eight wordings above, which exclude assessment or diagnostic tests in terms. Bupa and National Friendly word their ADHD exclusion around treatment, so whether a diagnosis alone could be paid for is for those two insurers to confirm.
Does health insurance cover an ASD assessment?
ASD is autism spectrum disorder, and the labels vary: Bupa writes "autistic spectrum disorder (ASD)", Aviva "autism spectrum disorder", Vitality "Autism", National Friendly lists Asperger syndrome alongside autism. Whatever the label, it sits in the same exclusion as ADHD in each document, so the answer splits the same way as for ADHD.
Can I still use private healthcare for ADHD in the UK?
Paying a private clinic directly is a separate route from insurance. The exclusions above are about what a policy will pay for, not about whether private care is available to you.
Next step
If your real question is whether any policy is worth its premium for you, send the form, then put the wording to the broker who calls before you discuss the price.