Private medical services are billed under the fee schedule for doctors. Each service has a number with a fixed point value. The doctor multiplies the simple rate by a multiplier. Under § 5 GOÄ, this multiplier should reflect the difficulty, the time required and the circumstances of the treatment. The standard maximum rate marks the limit up to which this assessment is allowed without further explanation.
In practice, most doctors bill personal services at 2.3 times the rate as standard. This factor is therefore the normal price of private medicine in practice, not the exception. For dentists, the fee schedule for dentists (GOZ) sets its own rules with the same logic: standard rate 2.3 times, maximum rate 3.5 times with a written reason.