How Much Does An ADHD Private Diagnosis Cost in the UK? The NHS is swamped with people looking for an ADHD diagnosis, and the waiting times are long. Some private health insurance companies will cover the cost for an assessment. The exact number of patients waiting for a diagnosis is https://telegra.ph/Five-Essential-Qualities-Customers-Are-Searching-For-In-Every-Private-Diagnosis-ADHD-03-07