As used in this article, the term:

(1) ‘‘Amendment’’ means any amendment, including a substitute bill, made to a retirement bill by any committee of the House or Senate or by the House or Senate.

(2) ‘‘LC number’’ means that number preceded by the letters ‘‘LC’’ assigned to a bill by the Office of Legislative Counsel when that office prepares a bill for a member of the General Assembly.

(3) ‘‘Nonfiscal amendment’’ means an amendment to a retirement bill having a fiscal impact, which amendment does not change any factor of an actuarial investigation specified in subsection (a) of Code Section 47-20-36.

(4) ‘‘Nonfiscal retirement bill’’ means a retirement bill which does not affect the cost or funding factors of a retirement system or a retirement bill which affects such factors only in a manner which does not:

(A) Grant a benefit increase under the retirement system affected by the bill;

(B) Create an actuarial accrued liability for or increase the actuarial accrued liability of the retirement system affected by the bill; or

(C) Increase the normal cost of the retirement system affected by the bill.

(4.1) ‘‘Nonfiscal retirement bill’’ also means a retirement bill which removes or increases a mandatory retirement age of a retirement system or which removes or modifies provisions of a retirement system requiring forfeiture of benefits upon failure to retire upon reaching a mandatory retirement age or which provides for any combination of the foregoing.

(5) ‘‘Reduction in cost amendment’’ means an amendment to a retirement bill having a fiscal impact which reduces the cost of the bill as such cost is determined by the actuarial investigation for the bill prepared pursuant to Code Section 47-20-36.

(6) ‘‘Retirement bill having a fiscal impact’’ means any retirement bill creating or establishing a retirement system and any other retirement bill other than a nonfiscal retirement bill. Such term shall include any bill requiring a public retirement system to divest or refrain from investing in specific investments or classes of investments.