How much does an ADHD assessment cost?

Why there’s no single price

Two things shape the spread. Neither of them is a measure of how good the assessment is.

There’s no US adult standard to hold anyone to. CHADD, developing the first US guidelines for adult ADHD alongside APSARD, states the problem plainly: “With no clinical practice guidelines, healthcare providers are not taught how to diagnose and treat ADHD in adults. This has created a significant gap in mental healthcare across the country.” Those guidelines are due in 2027. Until then, how long an adult assessment runs and what it contains is a decision each practice makes for itself.

An assessment is a set of billable services, not one product. The clinical interview, the psychological test evaluation, the hours of test administration and the report are separate services with separate codes. A practice that includes several hours of testing is billing more units than one that doesn’t, which is a different thing from a longer version of the same appointment.

Put those together and two people with the same question, in the same city, can be quoted amounts that differ several times over. What none of these sources can tell you is how much of that variation each factor explains, so treat the list as the things worth asking about rather than a ranking.

What the US federal data shows

Medicare publishes what providers actually billed, by code, nationally. It’s the closest thing the US has to a public price list for these services. Figures below are calendar year 2024, office place of service, from the CMS Medicare Physician and Other Practitioners dataset released in May 2026. The service names are shortened; in the dataset they read “psychiatric diagnostic evaluation”, “evaluation of psychological test” and “administration of psychological or neuropsychological test”.

Read those columns as two different things. The submitted charge is the gross amount providers put on Original Medicare claims. CMS notes that uninsured or inadequately insured patients could be billed full submitted charges, but this dataset doesn’t report observed self-pay prices or negotiated commercial-plan rates. The allowed amount is what Original Medicare recognised for payment, and it doesn’t govern what a commercial plan pays.

Three caveats matter before anyone quotes these back at a clinic. They come from Medicare fee-for-service, whose enrollees are mostly older or disabled adults rather than the population typically seeking an ADHD assessment. They cover every use of each code, including dementia and injury workups, not ADHD specifically. And they are averages across tens of thousands of providers: 70,767 rendered the psychiatric diagnostic evaluation code that year.

What the table does show is the arithmetic. An assessment billed as a single diagnostic evaluation involves one of these charges; one billed as an evaluation plus four hours of testing adds first-hour and additional-hour charges on top of administration charges. That is an illustration of how units accumulate, not a prediction of what you’ll be quoted or charged.

What insurance changes, and what it doesn’t

Being covered moves the number without necessarily making it small.

KFF’s 2025 Employer Health Benefits Survey found that 88% of covered workers with single coverage had a general annual deductible, and that among those workers the average was $1,886. It also found 34% of covered workers were in a plan with a single-coverage deductible of $2,000 or more, and that the average among workers with a deductible at firms with 10 to 199 workers ($2,631) ran well above the average at larger firms ($1,670). If the assessment services are subject to your deductible and you haven’t met it, you may owe the plan’s negotiated rate until you do.

Whether it’s covered at all is a separate question with a genuinely complicated answer, and we work through it in does insurance cover an ADHD assessment. The short version: federal parity law governs how a plan limits mental health benefits it covers, not whether it has to cover them.

What an assessment has to include

This is what lets you judge a quote instead of just comparing prices.

For children and adolescents, the US does have a guideline. The American Academy of Pediatrics says that to make a diagnosis, a clinician “should determine that DSM-5 criteria have been met, including documentation of symptoms and impairment in more than 1 major setting”, with information drawn primarily from parents or guardians, teachers, other school personnel and mental health clinicians involved in the child’s care, and should rule out any alternative cause. That’s a strong recommendation in the AAP’s own grading, and it describes an evidence-gathering process rather than a test battery.

On the expensive add-on the AAP is direct: “The use of neuropsychological testing has not been found to improve diagnostic accuracy in most cases, although it may have benefit in clarifying the child or adolescent’s learning strengths and weaknesses.”

For adults there’s no US equivalent yet, which is why the closest available standards are national guidelines from elsewhere. Both describe the same shape. England’s NICE guideline requires a full clinical and psychosocial assessment, a full developmental and psychiatric history, observer reports and assessment of mental state, conducted by an appropriately qualified professional, and says a diagnosis should not be made solely on rating scale or observational data. The Australian evidence-based clinical practice guideline sets out the same components, adds a medical assessment, and says medical investigations “should only be performed if clinically indicated”. It also reports that five major international diagnostic guidelines noted neuropsychological testing was not required to diagnose ADHD.

None of that means refusing testing. The Australian guideline is explicit that psychometric and neuropsychological evaluation helps identify co-occurring or alternative conditions where there’s diagnostic uncertainty, distinguishes conditions with similar presentations, picks up specific language and learning disorders, and informs treatment planning. Testing is worth paying for when it answers a question you have. It’s a poor reason to pay four figures when the only question is whether you have ADHD.

What to ask before you book

We did not identify a study comparing providers on any of the following in the searches conducted for this page, so treat this as our own list rather than a validated one. It’s built from what the guidelines above say an assessment must contain, which gives you something specific to hold a quote against.

• Which billing codes will you submit, and for how many units? This converts a package price into the stack it actually is, and the codes in the table above are the ones to ask about.
• What’s in the fee, and what’s billed separately? Report writing, a feedback session and a letter to your physician may be billed separately.
• Who conducts it, and what are they licensed as? Every guideline above makes the assessor’s qualification a requirement rather than a detail.
• Is psychological or neuropsychological testing included, and what question is it there to answer? If there’s no answer beyond “it’s part of our package”, you’re paying for something no guideline asks for.
• What happens next? Follow-up visits, prescriptions, and whether they’ll communicate with your primary care physician.
• What’s the refund position if you’re not diagnosed? An assessment that finds no ADHD is a legitimate result, not a failed purchase.

Outside the United States

Two systems worth knowing about, because the question changes shape entirely.

England. An NHS assessment is free at the point of use, and the currency is time rather than money. NHS England’s independent ADHD Taskforce reported in 2025 that there are no national reports on adult waiting times, that in a national survey of commissioners, primary care clinicians and people with lived experience 40% reported waits of 2 years or more, and that inability to access NHS services had produced “two-tier access to services, diagnosis and treatment; one for those who can pay and another for those who cannot.”

Australia. A parliamentary inquiry put private figures on the record. The Senate Community Affairs References Committee heard “of a $500 charge for an ADHD assessment then referred to a GP for management, another patient paying over $700 for a diagnosis, and up to $950 for a psychiatrist consult”, in Australian dollars, with the ADHD Foundation aware of some professionals charging up to A$5,000 and telling the committee that with no regulation of costings, private operators charge “whatever they feel they can get away with.”

A price is a business decision somebody else made. What an assessment has to contain is written down, in public, and you can check a quote against it before you pay.