How Much Does An ADHD Private Diagnosis Cost in the UK? The NHS is overloaded with patients who would like to be diagnosed with ADHD and the waiting times are long. However, some private health insurance companies will pay for an assessment. It is difficult to determine the exact number https://telegra.ph/A-How-To-Guide-For-ADHD-Private-Diagnosis-Cost-From-Start-To-Finish-03-07