Such health insurance plan shall not include expenses incurred by, or on account of, an individual prior to the effective date of the plan as to him; services received for injury or sickness due to war or any act of war, whether declared or undeclared, which war or act of war shall have occurred after the effective date of this plan; expenses for which the individual is not required to make payment; expenses to the extent of benefits provided under any employer group plan other than this plan in the cost of which the state participates; and such other expenses as may be excluded by the regulations of the board.
OCGA § 20-2-912