Is the Dr planning to Rx a few sessions of PT using a TENS on you to see if it will help you before actually trying to have wc pay for one?
Although TENS prices are fairly cheap now , less than 50.00 bucks usually on Amazon and most medical product websites. If wc or a rx'd purchase I'm sure the cost would be higher ...
So if you find it helps maybe buy your own if wc won't approve it, or takes a long time to decide, then send the bill to them for reimbursement.??