By: Zedler H.B. No. 2629 A BILL TO BE ENTITLED AN ACT relating to utilizing the range of motion model incorporated into the 4th Edition of the American Medical Association Guides to determine the impairment rating of the lumbar spine. BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF TEXAS: SECTION 1. Section 408.124, Labor Code, is amended by adding Subsection (d) to read as follows: Sec. 408.124. IMPAIRMENT RATING GUIDELINES. (a) An award of an impairment income benefit, whether by the commissioner or a court, must be based on an impairment rating determined using the impairment rating guidelines described by this section. (b) For determining the existence and degree of an employee's impairment, the division shall use "Guides to the Evaluation of Permanent Impairment," third edition, second printing, dated February 1989, published by the American Medical Association. (c) Notwithstanding Subsection (b), the commissioner by rule may adopt the fourth edition of the "Guides to the Evaluation of Permanent Impairment," published by the American Medical Association, or a subsequent edition of those guides, for determining the existence and degree of an employee's impairment. (d) The Division shall use the range of motion model from the fourth edition of the "Guides to the Evaluation of Permanent Impairment" to determine impairment for all lumbar injuries rather than the injury or diagnosis-related estimates model regardless of the which edition of the Guides the Division adopts pursuant to subsection (b) or (c) of this section. SECTION 2. This Act takes effect September 1, 2013.