Texas Government Code - GOV'T § 824.103. Absence of Beneficiary

(1) the member or annuitant fails to designate a beneficiary before death;

(2) a designated beneficiary does not survive the member or annuitant;

(3) a designated beneficiary, under Section 824.004, waives claims to benefits payable on the death of the member or annuitant;

(4) a beneficiary designation is revoked under Section 824.101(g);  or

(5) a person is not eligible to receive a benefit under Section 824.105.

(1) any surviving joint designated beneficiaries;

(2) any alternate beneficiaries;

(3) the surviving spouse of the decedent;

(4) any children of the decedent or their descendants by representation;

(5) the parents of the decedent;

(6) the executor or administrator of the decedent's estate;  or

(7) the persons entitled by law to distribution of the decedent's estate.