Tex. Finance Code § 66.308: HEARING ON CLAIM; APPEAL OF ADVERSE DETERMINATION OF CLAIM.

(a) A claimant may appeal an adverse determination of a claim by filing suit on the claim in a district court of Travis County within three months after the date on which notice is mailed under Section 66.307.

(b) The determination on a claim becomes final and is not subject to review if suit is not filed in accordance with Subsection (a).

(c) Review by a district court under Subsection (a) is by trial de novo.

Acts 1997, 75th Leg., ch. 1008, Sec. 1, eff. Sept. 1, 1997.