Is gamete cryopreservation and fertility treatment for cancer patients covered?

Try Fertile Hope. If your insurance doesn't cover it (worth checking) look into fertile hope, who offer discounted treatment and/or free medications. http://bit.ly/ibrss9. Best wishes.
Likely No. Insurance coverage is very variable. If there is no coverage that does not mean there is no help. There are many programs that can offer help to men, women and children diagnosed with cancer.