Tex. Gov't Code § 824.501
(a) The designated beneficiary of a service or disability retiree who dies while receiving a service or disability retirement benefit may elect to receive:
Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981.
Amended by Acts 1989, 71st Leg., ch. 835, Sec. 5, eff. Sept. 1, 1989. Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 34.501 and amended by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989.
Amended by Acts 1991, 72nd Leg., R.S., Ch. 16 (S.B. 232), Sec. 11.05(e), eff. August 26, 1991.
Amended by Acts 1991, 72nd Leg., 1st C.S., ch. 13, Sec. 10, eff. Sept. 1, 1992.