Subsection 351-5-1-012 - PERMANENT IMPAIRMENT RATINGS1. Permanent impairment will be determined by the use of the American Medical Association's Guides to the Evaluation of Permanent Impairment, 4th edition, copyright 1993.2. Permanent impairment examinations performed by the employee's treating health care provider will have a maximum charge of $450.00. C.M.R. 90, 351, ch. 5, § 351-5-1, subsec. 351-5-1-012