Every certificate furnished by an insurer in connection with, or pursuant to any provision of any group sickness and accident insurance policy delivered, issued for delivery, renewed, or used in this state, provided such policy was delivered, issued for delivery, or renewed on or after July 1, 1972, and every policy of sickness and accident insurance delivered, issued for delivery, renewed, or used in this state, provided such policy was delivered, issued for delivery, or renewed on or after July 1, 1972, which provides for kidney dialysis benefits, shall be deemed to include such benefits on an equal basis if the dialysis is performed on an out-patient basis. For purposes of this section, “out-patient basis” includes care rendered at any location whether or not at a hospital, upon approval by the attending physician.