What overbooking is in a clinical schedule

The word covers two different practices, and they are worth separating before arguing about whether it is a good idea.

1. Clinical overbooking: a case that cannot wait is added onto a closed schedule, on the service lead's call.
2. Statistical overbooking: more appointments are released than fit, on the assumption that a share of patients will not turn up.

The second kind can be calibrated patient by patient. In a VA study of predictive overbooking, researchers scored each scheduled patient's no-show risk from electronic health record data and used that score to decide how far to overbook a gastroenterology clinic.

What happens if attendance improves and overbooking stays the same?

The waiting room absorbs the difference. The service that added appointments to offset no-shows starts seeing everyone it booked, waiting times stretch and complaints arrive. The indicator improved and the patient experience got worse in the same week.

So the overbooking policy gets revisited whenever something upstream changes: a new reminder, a new channel, an outreach push. Anyone lifting attendance in a service owes the schedule a warning before the waiting room finds out on its own, which is how we handle it in the no-show argument.

Permanent overbooking in a service is usually a capacity deficit in disguise: the schedule looks workable in the system and is not workable in the corridor.