You can get a DEXA before any due date according to an oncologist I saw because of having breast cancer. He got a friend's insurance to cover it as she was at high risk for osteoporosis before going on anastrozole. Even if the insurer declines, over half of the appeals win. And, from the insurer's perspective, the estimated cost of covering osteoporosis risks is a lot more than preventing further bone loss. A 'no' response is often the first step that leads to a 'yes' response...so noted an instructor of negotiation skills once ;-).

Having said that, the DEXA is X-ray technology so that is more radiation to consider?