An insurer may make investments that are not otherwise authorized by this chapter or otherwise authorized by this code for the insurer if:
(1) the investment is not specifically prohibited by law and does not exceed the limits prescribed by this code;
(2) the amount of a single investment under this section does not exceed five percent of the insurer's capital and surplus in excess of the insurer's minimum capital and surplus; and
(3) the aggregate amount of all investments made by the insurer under this section does not exceed five percent of the insurer's assets.