Will insurance cover avastin as 2nd line drug

harbin

Hi, I have just been diagnosed for a recurrece that the cancer have come back to my chest wall after 1 yr.  A tumor about 3.5cm is found on my chest wall. So far, no met have been seen anywhere else. My doctor suggests to shrink it first, then do the surgery, then maybe radiation. Dr. thinks "cisplatin" is a better candidate to shrink the tumor, also mentioned that if cisplatin does not work, there are many other drug options that can be used later, including taxol/avastin. I have heard that avastin has to be used as 1st line of drug for treating metastisis patients, otherwise, the insurance company would not pay for it. In my case, if I use cisplatin as 1st line treatment, and avastin as 2nd line treatment, Will insurrance cover the avastin treatment? Does anyone have experience on this.   Thank you very much.