Yes, my doctor prescribed my vest and insurance has provided coverage. I pay a small amount.
I don't know all the criteria needed for insurance to cover; my medical team coordinated with insurance and the vest company. I can say it took many weeks between the order and approval/delivery.
I also use nebulized albuterol and saline in conjunction with my vest. I am lucky that I tolerate all well. I hope your meds can be adjusted so you feel better and I hope you are able to get a vest with insurance coverage. Good Luck!