Each plan is different, and each plan is different in each state too. Nobody can really help you out 100% here unless it's somebody in your state with your exact plan and knows the plan already. Each insurance has different criteria for coverage. Do you know your measurements? Most insurance companies want to see at least 5mm discrepancies before even considering this medically necessary. Or they want to see proven sleep apnea, debilitating pain, limited function that causes loss of nutrition, etc-- and for all of those things sometimes previous measures that were taken to make them better, IE: if you have apnea, did you try a cpap already and it didn't work. They want to make sure all other options are exhausted. Your doctor will send in all the required scans and documents with that kind of information to put in for medical necessity with your insurance.