Texas Insurance Code - INS § 1251.112. Deadline for Claim

(1) in the case of a claim for a loss other than a claim for a loss of time for disability, written proof of the loss must be provided to the insurer not later than the 90th day after the date of the loss;  and

(2) in the case of a claim for loss of time for disability:

(1) it was not reasonably possible to provide written proof of the loss within that time;

(2) written proof of the loss is provided as soon as reasonably possible;  and

(3) unless the claimant does not have the legal capacity to provide proof of loss, proof of loss is provided not later than the first anniversary of the date the proof of loss is otherwise required.