Autism Overdiagnosis:
Where's the Evidence?
Their diagnoses aren't in question. Their funding is.
BC's Autism Funding program ends on March 31, 2027. Level 1 and Level 2 Autistic children are not on the new Disability Benefit's fast-track list. Most will have to show high support needs through a review, and many families are expected to receive much less. We looked at what the public record shows about Autism overdiagnosis in BC, and at the evidence behind where the new line was drawn.
0
published studies we have found measuring Autism overdiagnosis in BC
The Ministry's own list of the research it consulted does not include one either.[10]
4 in 10
children referred to BC's public assessment network were not diagnosed with Autism
Of 12,058 children referred to the BC Autism Assessment Network from 2010 to 2016, 7,271 were diagnosed.[12]
First prepared in April 2026. Updated and checked against Ministry sources on October 4, 2026.
The issue
The Ministry says it is not questioning any child's diagnosis. So what changed?
In February 2026, the BC government announced that the Autism Funding program will end on March 31, 2027.[5][7] Two new direct funding programs replace it: the BC Children and Youth Disability Benefit, based on support needs, and the income-tested BC Children and Youth Disability Supplement.
Some Autistic children qualify for the Benefit automatically. That includes children with DSM-5 Level 3 Autism, profound Autism, Autism with an intellectual disability, or Autism with certain other conditions.[4] Level 1 and Level 2 Autistic children without those conditions are not on that list. The Ministry says a Level 1 diagnosis does not automatically exclude a child, but these children have to show high support needs through a separate review.[5]
The Ministry expects about 9,000 Autistic children to qualify for the Benefit. About 39,000 children with Autism have an open Autism Funding case today. The Ministry also expects about 80% of current Autism Funding recipients to receive direct funding through the Benefit, the Supplement, or both.[5][6]
The Ministry has also said it is "not reassessing or questioning any child's diagnosis."[6] We take it at its word. That is exactly our concern. These diagnoses were made to BC's own standard, and nobody says they are wrong. The funding attached to them is ending anyway.
The evidence
What the government has said, and what the evidence shows
The government's published reason for the change is a move from diagnosis-based to needs-based funding. We support funding based on need. The question is what evidence set the line where it falls.
What the government has said in public
In the Legislature, Minister of Children and Family Development Jodie Wickens has described the new Benefit as being for "children and youth with the most significant needs, not just children with one singular diagnosis." She has said the new model was informed by an engagement process in which about 5,000 people gave feedback, and by "experts, leading pediatricians and psychologists," naming Dr. Suzanne Lewis of the SFU Autism Lab.[2]
On May 27, 2026, she told the Legislature:
"Under our current system, you could have a family that makes over $200,000 a year with a child with Autism who is indistinguishable from their peers, taking advanced-level calculus courses, get the same amount of funding as a single parent ... who has a child with significant disabilities living on the poverty line. Our current system is not working."[2]
The government's public case is about need and fairness, not about whether diagnoses are accurate. The point about income is fair, and the new Supplement is income-tested. But the Ministry's own example of a child who does not qualify, Ollie, is not "indistinguishable from their peers." He needs support in every setting. The Ministry has not published the evidence it used to decide that his level of need falls below the line.
Here is what the published record does show.
BC's diagnostic standard
Two assessment tools, every time
To qualify for funding, every Autism assessment in BC, at any age, must include both the Autism Diagnostic Observation Schedule (ADOS) and the Autism Diagnostic Interview-Revised (ADI-R). The assessment is done by a paediatrician, psychiatrist or registered psychologist. Children under six need a multidisciplinary diagnosis, though the paediatrician report for that age group has been temporarily suspended since October 2025.[11]
BC Autism Assessment Network, 2010 to 2016
About 4 in 10 referred children were not diagnosed
A UBC and Sunny Hill study of 12,058 children referred to BC's public assessment network found 60% were diagnosed with Autism. The rest were not. It covers the public network only, not private clinics, and it was published as a conference abstract.[12]
UBC and BC Children's Hospital, 2020
Clinical diagnoses were the yardstick
A study of 8,670 BC children used clinical assessments from the BC Autism Assessment Network as the gold standard. The problem it found was in administrative billing data, which could not reliably tell Autism apart from other developmental conditions. It did not find a problem with clinical assessment.[13]
BC Legislature committee, 2019
The 2019 concern was about a different group
A legislative committee heard that psychologists sometimes diagnosed Autism in children with intellectual disabilities or mental health conditions so families could get funding.[1] Under the new rules, Autism with an intellectual disability qualifies automatically, and so does Down syndrome.[4] That concern does not explain setting aside Level 1 and 2 children without those conditions.
Four problems
Where the line was drawn, and why it worries us
Each of these comes from the government's own documents or the sources it relies on.
Severity levels used in a way the DSM says not to
BC requires diagnoses to meet the criteria of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).[11] The current edition states: "The descriptive severity categories should not be used to determine eligibility for and provision of services."[3]
The new Benefit uses DSM-5 Level 3 as an automatic eligibility route and sends Level 1 and 2 children to a separate review.[4]
The Ministry's guide relies on the Lancet Commission on the Future of Care and Clinical Research in Autism to define profound Autism. That same Commission noted that eligibility systems built on IQ thresholds can leave out Autistic people without marked developmental delays.[4][14]
No published evidence for where the line falls
The Ministry has not published the evidence it used to set the Benefit threshold. Its list of the research it consulted does not include a study of overdiagnosis.[10] It has published the areas of need it looks at in the needs-based review, but not how much need in each area is enough to qualify.
Psychologists in BC are regulated by the College of Health and Care Professionals of BC. Paediatricians and psychiatrists are regulated by the College of Physicians and Surgeons of BC. We have found no public record that either was asked whether its members' diagnostic practices were a problem.
A concern raised in 2019, never measured in public
The 2019 Select Standing Committee on Children and Youth held eight public hearings, heard 87 presentations and received 137 written and video submissions. Its report recorded the concern about diagnoses being driven by funding.[1] We have found no published audit of diagnostic accuracy since.
The same committee recommended that supports be based on need and functional ability and provided before diagnosis.[1] We agree. Needs-based support should bring more children in. It should not set aside children whose needs are already documented.
A gap in the government's own timeline
Autism Funding ends on March 31, 2027.[5] The first Supplement payments arrive in July 2027.[8] The Ministry's rollout lists continued expansion of behaviour and mental health supports in summer 2027, and expanded programming for children and teens in spring 2028.[9]
The Ministry says youth will be supported through existing and expanding services during this time.[10] Families still need a clear answer about the months in between. MCFD's own 2024 transition binder states that 91% of children with neurodiversity receive no mental health intervention in a typical year.[17]
The Ministry's own example
Meet Ollie
The Ministry's guide for families uses fictional children to show how the new programs work. The fourth example is Ollie.
From the Ministry's Guide for Current Service Recipients, revised March 2026, p.29
"Ollie has Autism. He is highly verbal and does not have an intellectual disability. He struggles significantly in social interactions and requires intensive social skill development. He also has ADHD and requires modifications at home, school, and in all environments to ensure he remains self-regulated. Ollie's adjusted family net income is $120,000 per year."[4]
The Ministry's conclusion: "Ollie does not qualify for the Disability Benefit." His needs, it says, "do not meet the eligibility threshold for this benefit, which is designed to support children with disabilities with the most significant need for support in daily living."[4]
The guide says Ollie is eligible for Autism Funding today. That means his diagnosis met BC's standard, including both the ADOS and the ADI-R.[11] Nothing in the guide questions it. Because Level 3 Autism qualifies for the Benefit automatically, Ollie's example points to children with Level 1 or Level 2 diagnoses. Many families will recognize their own child in him.
$78,000
Support over Ollie's childhood under Autism Funding, if diagnosed at age six, using the Ministry's own figures.[4]
$42,000
Support from age 6 to 18 under the new system: a Supplement of $3,200 a year at his family's income of $120,000.[4]
Why Ollie's profile matters
Content note: this section describes research on suicide risk.
ADHD is not on the list of conditions that qualify an Autistic child for the Benefit automatically. Yet it is common: a 2021 review of the research estimated that about 40% of Autistic people have ADHD at some point in their lives.[15] A large Swedish population study found that Autistic people without an intellectual disability who also have ADHD were the highest-risk group for suicide attempts and suicide deaths.[16] Ollie's profile is that group.
If you or someone in your family needs support right now, you can call or text 9-8-8, the Suicide Crisis Helpline, any time.
Not questioning a diagnosis, while ending the funding attached to it, is a distinction without a difference for families.
The Ministry says it is not reassessing anyone's diagnosis. We believe that. If the diagnoses stand, families deserve to know what evidence set the new line, and why it falls where it does.
Before March 31, 2027
What we haven't seen
These are the pieces we would expect before a change this large takes effect. As of October 4, 2026, we have not found any of them in the public record.
- A published study or audit of Autism diagnostic accuracy in BC. The Ministry's list of research it consulted does not include one.[10]
- The evidence used to set the Benefit threshold, or why children with Ollie's profile fall below it.
- Published scoring for the needs-based review. The Ministry has published the areas of need it looks at, but not how much need in each area is enough to qualify.
- Any record that either regulatory college was consulted about the diagnostic practices of its members.
- Direct support that continues without a break. Autism Funding ends March 31, 2027, and the first Supplement payment is in July 2027.[5][8]
- Expanded programming for school-age children before spring 2028.[9]
What we are asking
Questions we are asking the Ministry
The threshold
The Ministry's own example, Ollie, has a diagnosis made to BC's standard and needs support "at home, school, and in all environments." What evidence was used to set the Benefit threshold at a level that excludes his profile?
The evidence
Will the Ministry publish the evidence it used to decide which diagnoses qualify automatically, and where the needs-based line falls?
The criteria
When will the Ministry publish how much need in each area is enough to qualify for the Benefit, so families know where the line is before Autism Funding ends?
The DSM
The DSM says severity categories "should not be used to determine eligibility for and provision of services." Why does the Benefit use Level 3 as an automatic route while sending Level 1 and 2 children to a separate review?
The gap
Autism Funding ends March 31, 2027, and the first Supplement payments arrive in July 2027. What direct support will a Level 1 or Level 2 Autistic child have in April, May and June 2027?
Where we stand
We support funding based on need. Many disabled children in BC have gone without support for far too long, and bringing them in is the right thing to do. But adding children should not mean setting aside Autistic children whose needs are documented and whose diagnoses nobody disputes. Before the change takes effect, we are asking the Ministry to:
- Publish the evidence used to decide which diagnoses qualify automatically, and where the needs-based line falls.
- Expand direct admit to include Autism at all DSM-5 levels, and add co-occurring ADHD to the conditions that qualify an Autistic child for direct admit.
- Complete and publish the full needs-based review criteria, with a clear timeline, before any further transitions.
- Guarantee interim support for every child without a direct admit route, including the months between the end of Autism Funding and the first Supplement payment.
- Convene an urgent review panel including the BC Coroners Service, the Representative for Children and Youth, the BC Association for Child Development and Intervention (BCACDI), clinical experts and families.
Sources
- Select Standing Committee on Children and Youth, Legislative Assembly of BC. Children and Youth with Neuro-Diverse Special Needs, October 30, 2019. Diagnosis concern, p.15; Recommendation 6, p.22.
- Hansard, Legislative Assembly of BC. February 18, 2026, p.4852; March 12, 2026, pp.5883 to 5884; May 27, 2026, afternoon sitting, Oral Questions.
- American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), 2022, p.59.
- MCFD. Children and Youth with Support Needs: Guide for Current Service Recipients, revised March 2026. Direct admit criteria, pp.9 to 10; Persona 4 (Ollie), p.29. First edition published February 2026.
- MCFD. Children and Youth with Support Needs: Announcement FAQ, February 2026. Autism Funding end date and about 80% of current recipients to receive direct funding, p.2; Level 1 diagnosis not an automatic exclusion and about 9,000 Autistic children expected to qualify, p.3.
- Province of BC. Commonly Asked Questions: families eligible for Autism Funding, updated August 11 and September 22, 2026. Diagnoses not reassessed; about 39,000 open Autism Funding cases.
- BC Government news release, "Supporting children, youth with disabilities with new programs, more funding," February 10, 2026.
- Province of BC. BC Children and Youth Disability Supplement, accessed September 24, 2026; and MCFD, Disability Supplement description, version 2. Maximum, phase-out and July 2027 first payments.
- MCFD. Expansion of Community Based Services, rollout timeline, 2026.
- Legislative Assembly of BC. Votes and Proceedings, May 26, 2026. Ministry responses on research consulted (question 10) and youth supports (question 11).
- Province of BC. How Autism is diagnosed, last updated June 10, 2026.
- Ip A, Weikum W, Lanphear N. "Examining referral patterns and diagnostic rates in the British Columbia Autism Assessment Network." Conference abstract, Paediatrics & Child Health, 2018. PMC5961318.
- Bickford CD, et al. "Identification of pediatric Autism spectrum disorder cases using health administrative data." Autism Research, 2020, 13(3):456 to 463. DOI 10.1002/aur.2252.
- Lord C, et al. "The Lancet Commission on the future of care and clinical research in Autism." The Lancet, 2022, 399(10321):271 to 334, p.11. DOI 10.1016/S0140-6736(21)01541-5.
- Rong Y, et al. "Prevalence of attention-deficit/hyperactivity disorder in individuals with Autism spectrum disorder: a meta-analysis." Research in Autism Spectrum Disorders, 2021, 83:101759.
- Hirvikoski T, et al. "Individual risk and familial liability for suicide attempt and suicide in Autism: a population-based study." Psychological Medicine, 2020, 50(9):1463 to 1474. DOI 10.1017/S0033291719001405.
- MCFD. Transition Binder, October 2024, p.74.
Ollie is a fictional example created by the Ministry. This page shares information, not legal or medical advice. If you have questions about your own child's funding, contact the Ministry or reach out to us.