Two evaluations, two purposes
A school evaluation — in Clark County, usually through the school district's multidisciplinary team — answers an educational question: does this child qualify for special education services under the eligibility category of autism? It exists to build an IEP (an Individualized Education Program, the legal document that sets your child's supports at school). It is real, it matters, and fighting for it was worth it.
A medical diagnosis answers a clinical question: does this child meet the diagnostic criteria for autism spectrum disorder? It comes from a physician or psychologist, and it's what health insurance — including Nevada Medicaid and every MCO — requires before covering ABA therapy, and typically speech and other therapies billed through medical benefits.
The confusion is understandable, because both documents can literally say the word “autism.” But the school's eligibility determination is not a medical diagnosis, and insurers won't accept it as one. The reverse is also true: a medical diagnosis alone doesn't automatically create an IEP — the school still runs its own process.
Which one do you need? (Probably both — here's the split)
- Want ABA therapy, or therapies billed through insurance? → Medical diagnosis. Non-negotiable for coverage.
- Want classroom supports, accommodations, an aide, specialized instruction? → School evaluation and IEP.
- Want the full picture — therapy hours AND a supported school day? → Both. Most families end up here, and the two documents strengthen each other: evaluators read each other's reports.
Getting the medical diagnosis in the Las Vegas valley (the practical part)
Start with your pediatrician and say the specific words: “I'd like a referral for an autism diagnostic evaluation.” The evaluation is typically done by a developmental pediatrician, child psychologist, or psychiatrist. Under Nevada Medicaid, diagnostic evaluations are covered — ask your MCO for in-network diagnosticians, and ask about waitlists at more than one practice.
Bring everything you have to that appointment — especially the school evaluation. It doesn't substitute for the medical diagnosis, but it's strong supporting evidence, and it can shorten the clinical picture-building considerably. Your fight for the school eval wasn't wasted; it's about to do double duty.
Timelines, honestly
Diagnostic waitlists in the valley are real, and pretending otherwise helps no one. They vary by provider and coverage — weeks to many months. Three ways families shorten the wait: get on multiple waitlists at once, ask to be on the cancellation list, and make sure the referral paperwork is complete the first time (incomplete referrals silently restart clocks).
What you can do while you wait
- Ask the school for the evaluation if you don't have one yet — the IEP process doesn't need to wait for the medical diagnosis.
- Document specifics: short videos and dated notes of the moments you'd want an evaluator to see. Concrete beats general at every evaluation.
- Call prospective therapy providers now. Good ones (us included) will explain their intake, verify your coverage, and queue what can be queued so the diagnosis slots straight in.
- Early signs are a reason for support, never a verdict — Nevada Early Intervention Services (NEIS) serves children under 3 without requiring an autism diagnosis; a parent, pediatrician, or any provider can start a referral at 800-522-0066.