(a) Nothing in this chapter shall be construed as allowing physical therapists to practice medicine, osteopathy, podiatry, chiropractic or nursing.
(b)
(1) The scope of practice of physical therapy shall be under the written or oral referral of a licensed doctor of medicine, chiropractic, dentistry, podiatry or osteopathy, with exceptions as stated in § 63-13-303.
(2) The scope of practice of physical therapy shall not include the performance of treatment where the physical therapist or physical therapist assistant uses direct thrust to move a joint of the patient's spine beyond its normal range of motion without exceeding the limits of anatomical integrity.