Texas Health and Safety Code - HEALTH & SAFETY § 597.021. ICF-IID Assessment of Client's Capacity to Consent to Treatment

(a) The executive commissioner by rule shall require an ICF-IID certified in this state to assess the capacity of each adult client without a legal guardian to make treatment decisions when there is evidence to suggest the individual is not capable of making a decision covered under this chapter.

(b) The rules must require the use of a uniform assessment process prescribed by department rule to determine a client's capacity to make treatment decisions.