Texas Government Code - GOV'T § 854.302. Eligibility for Disability Retirement Annuity

(a) A member who has less than 10 years of credited service in the retirement system is eligible to retire and receive a disability retirement annuity if the member is the subject of a certification issued as provided by Section 854.303(b)(1).

(b) A member who has at least 10 years of credited service in the retirement system is eligible to retire and receive a disability retirement annuity if the member is the subject of a certification issued as provided by Section 854.303(b)(2). A member eligible to retire and receive a disability retirement annuity under this subsection may elect to retire and receive instead a service retirement benefit but may not receive both types of benefits.