The phrase "prior approval" means getting permission or consent before doing something. It is important to seek permission from someone or get approval before taking certain actions or making certain decisions. Full definition
Any change in surrender value calculation method shall only be after prior approval of the authority. (hdfclife.com)
Patients can now go for 14 days of treatment without prior approval from their health insurance carrier. (timesunion.com)
Drivers with prior approval from their insurance company can attend traffic school classes in order to receive a safe driver discount on their insurance rates. (dmv.com)