If I registered for Blue Rewards prior, do I need to re-register in a new year? November 22, 2022 15:02 Updated No. Blue Rewards registrants who renew their BlueCross policy do not need to re-register for Blue Rewards. Related articles Can reward dollars be used at the doctor’s office? Can reward dollars be used to pay for prescription medicines? What if I get a flu shot toward the end of the year and earn reward dollars? Will I only have a few days after receiving the flu shot to use the rewards? Why can’t I use my card at this doctor? Can reward dollars be used out of network?