That is not quite what I meant Neo.
I understand the "tariff" system but am not sure of any reconciliation back to individual insurance claims. My, limited, understanding is that the PCT's/Commissioning body pays based on the patient record coding. We get patients for local private plastic surgeons where something has gone wrong mid surgery and they are quickly sent to "us". I don't think that we send them a bill. The only chargeback I know is if a patient is not entitled to NHS treatment (ie a visitor to the country) and then we struggle to get any cash back for them.
Airhead - yep mate.