Texas Health and Safety Code - HEALTH & SAFETY § 576.026. Independent Evaluation

(a) A patient receiving inpatient mental health services under this subtitle is entitled to obtain at the patient's cost an independent psychiatric, psychological, or medical examination or evaluation by a psychiatrist, physician, or nonphysician mental health professional chosen by the patient. The facility administrator shall allow the patient to obtain the examination or evaluation at any reasonable time.

(b) If the patient is a minor, the minor and the minor's parent, legal guardian, or managing or possessory conservator is entitled to obtain the examination or evaluation. The cost of the examination or evaluation shall be billed by the professional who performed the examination or evaluation to the person responsible for payment of the minor's treatment as a cost of treatment.