Schedule warning when authorization has expired or patient used up all the visits

Would like for there to be an alert when someone tries to schedule a patient beyond their number of authorized visits or outside of their authorized visit dates. This would cut down on unauthorized or non-payed for visits for patients as well as for therapists. One of the worst situations we have is when we realize a patient was seen for a visit outside of their authorization and then the question becomes who is responsible. A feature like a schedule alert would cut down on these situations significantly.