Effective October 1, 2010, BlueCross BlueShield of South Carolina began providing coverage for the seasonal influenza virus vaccine and its administration. This is part of our preventive immunization services. We cover one vaccination per year. We will cover additional influenza vaccines (i.e., the number of doses of a vaccine and/or the type of influenza vaccine) when they are deemed to be medically necessary. BlueCross will cover the vaccine and its administration for all fully insured members who have immunization benefits as part of their health plans. View a list of vaccination and administration codes.