(1) For purposes of this section and section 23-2323.03:

(a) Direct rollover means a payment by the retirement system to the eligible retirement plan or plans specified by the distributee;

(b) Distributee means the member, the member's surviving spouse, or the member's former spouse who is an alternate payee under a qualified domestic relations order as defined in section 414(p) of the Internal Revenue Code;

(c) Eligible retirement plan means (i) an individual retirement account described in section 408(a) of the Internal Revenue Code, (ii) an individual retirement annuity described in section 408(b) of the code, except for an endowment contract, (iii) a qualified plan described in section 401(a) of the code, (iv) an annuity plan described in section 403(a) or 403(b) of the code, (v) except for purposes of section 23-2323.03, an individual retirement plan described in section 408A of the code, and (vi) a plan described in section 457(b) of the code and maintained by a governmental employer. For eligible rollover distributions to a surviving spouse, an eligible retirement plan means subdivisions (1)(c)(i) through (vi) of this section; and

(d) Eligible rollover distribution means any distribution to a distributee of all or any portion of the balance to the credit of the distributee in the plan, except such term shall not include any distribution which is one of a series of substantially equal periodic payments, not less frequently than annually, made for the life of the distributee or joint lives of the distributee and the distributee's beneficiary or for the specified period of ten years or more and shall not include any distribution to the extent such distribution is required under section 401(a)(9) of the Internal Revenue Code.

(2) For distributions made to a distributee on or after January 1, 1993, a distributee may elect to have any portion of an eligible rollover distribution paid directly to an eligible retirement plan specified by the distributee.

(3) A member's surviving spouse or former spouse who is an alternate payee under a qualified domestic relations order and, on or after January 1, 2010, any designated beneficiary of a member who is not a surviving spouse or former spouse who is entitled to receive an eligible rollover distribution from the retirement system may, in accordance with such rules, regulations, and limitations as may be established by the board, elect to have such distribution made in the form of a direct transfer to a retirement plan eligible to receive such transfer under the provisions of the Internal Revenue Code.

(4) An eligible rollover distribution on behalf of a designated beneficiary of a member who is not a surviving spouse or former spouse of the member may be transferred to an individual retirement account or annuity described in section 408(a) or section 408(b) of the Internal Revenue Code that is established for the purpose of receiving the distribution on behalf of the designated beneficiary and that will be treated as an inherited individual retirement account or individual retirement annuity described in section 408(d)(3)(C) of the Internal Revenue Code.

(5) The board may adopt and promulgate rules and regulations for direct rollover procedures which are consistent with section 401(a)(31) of the Internal Revenue Code and which include, but are not limited to, the form and time of direct rollover distributions.