How Much Does An ADHD Private Diagnosis Cost in the UK? The NHS is swamped with people looking for an ADHD diagnosis and waiting times are long. Certain private health insurance companies will pay the cost for an assessment. The exact number of people waiting for an appointment is difficult https://wyatt-thomas-3.federatedjournals.com/why-private-assessment-for-adhd-is-harder-than-you-imagine/