Illinois Just Made It Easier to Get an Autism Diagnosis. Here's What Parents Should Know

If you're a parent in Illinois who has ever tried to get your toddler evaluated for autism, you already know the problem: the wait can stretch past a year, sometimes close to two. That delay isn't just frustrating; it can mean months or years without the early intervention services that make the biggest difference in a child's development.

This July, Illinois took a major step toward fixing that. Governor JB Pritzker signed House Bill 5225 into law on July 10, 2026, a measure that will allow trained speech-language pathologists (SLPs) to diagnose autism spectrum disorder in children under age 3. It's one of the most significant changes to autism diagnosis policy in the state in years, and it's worth understanding, whether you're a parent, an early intervention provider, or just someone who cares about how Illinois supports young families.

The Problem: Illinois Autism Evaluation Wait Times

Right now, only a small pool of specialists, mostly psychologists and pediatricians with developmental training, are authorized to diagnose autism spectrum disorder in Illinois. Demand for evaluations has far outpaced the number of qualified clinicians, and in many parts of the state, families are waiting up to two years just to get an appointment.

For a toddler, two years isn't a rounding error. It's a huge chunk of the developmental window when early intervention, including speech therapy, occupational therapy, and behavioral support, has the most impact. State Senator Meg Loughran Cappel (D-Shorewood), the bill's lead Senate sponsor, put it plainly: "Due to the current shortage of medical professionals allowed to diagnose autism, children are waiting up to two years for an autism evaluation, which leaves families without support during their children's critical early years."

What HB5225 Actually Does

HB5225 amends the Illinois Speech-Language Pathology and Audiology Practice Act to expand who can make an autism diagnosis. Under the new law, a licensed speech-language pathologist can diagnose autism spectrum disorder if two conditions are met:

The child must be under 3 years old, and the diagnosis must happen through the Illinois Early Intervention Program. The speech-language pathologist must also be specifically trained in autism diagnostic evaluation methods, whether through an approved academic curriculum, worksite training, or continuing education, and hold an active autism evaluation credential issued through the Early Intervention Program.

Importantly, the law doesn't hand SLPs unlimited diagnostic authority. If a child's care plan requires something outside a speech-language pathologist's scope of practice, the law requires a referral to the appropriate medical personnel for further evaluation or management. It's designed to add a qualified front line, not replace medical oversight entirely.

The bill passed the Illinois House unanimously, 110-0, before clearing the Senate, a rare show of bipartisan agreement that reflects just how widely felt the diagnosis backlog has become.

Why Speech-Language Pathologists?

It's a reasonable question: why SLPs specifically, and not another type of provider? The answer comes down to overlap in training. Speech-language pathologists already specialize in social communication, language development, and the kinds of behavioral markers clinicians look for when screening for autism spectrum disorder in very young children.

Senator Loughran Cappel framed it this way: "If we want to expand the number of people who can diagnose autism, speech-language pathologists are a natural place to start since they already have social communication training." Early research on SLP-led diagnosis backs this up: studies have found that speech-language pathologists with focused training in autism diagnostic tools can identify autism spectrum disorder about as accurately as specialists with more extensive credentials.

Insurance and Medicaid Will Cover It

A diagnosis only helps if families can actually afford it. HB5225 addresses that by amending the Illinois Insurance Code and the Medical Assistance Article of the Illinois Public Aid Code, so that insurance companies, including Medicaid, must cover autism evaluations performed by a qualified speech-language pathologist under this new pathway. That's a meaningful detail, because it means the law isn't just expanding who can diagnose autism; it's making sure that expanded access doesn't come with a new financial barrier.

When Does the Law Take Effect?

Here's the one catch for families hoping for immediate relief: HB5225 doesn't take effect until January 1, 2028. That gap gives the state time to build out training programs, establish the autism evaluation credential process through the Early Intervention Program, and get insurers and Medicaid systems updated to reflect the new coverage requirements.

In other words, this is a law worth knowing about now, but it's not a same-day fix for the current wait times. Families navigating an autism evaluation today will still be working within the existing system for a while longer.

What This Means for Illinois Families

For parents currently stuck on a waitlist, HB5225 is a signal that the state recognizes the bottleneck and is building more capacity into the system, even if the relief isn't immediate. For speech-language pathologists working in early intervention, it's an opportunity to take on an expanded, more impactful role in the diagnostic process, provided they pursue the required training and credentialing.

More broadly, Illinois' move reflects a national conversation about the autism diagnosis backlog. Wait times for developmental evaluations have become a widespread issue across the U.S., and states are increasingly looking at ways to widen the pool of qualified evaluators without compromising diagnostic accuracy. Illinois may not be the last state to expand this authority to speech-language pathologists; expect other legislatures to watch how HB5225 plays out.

If you're a parent with concerns about your child's development, the best move right now is still to talk to your pediatrician and get on a waitlist as early as possible. The new law changes who can eventually diagnose, but it doesn't change the urgency of catching developmental delays early. In the meantime, Early Intervention services in Illinois can often begin addressing developmental concerns even before a formal autism diagnosis is in hand, so don't wait on paperwork to start asking questions.

Worried About Your Child's Development? Don't Wait to Act

If your child is under 3 and you've noticed delays in speech, social interaction, or communication, you don't need a diagnosis in hand to get started. At BMS Pediatric Therapy Group, we help families navigate this process, from the first developmental concern through evaluation and early intervention services. Visit www.bmstherapygroup.com to contact us and get started. The sooner a child is connected to support, the more effective it tends to be.