A. The Official Disability Guidelines--Treatment in Workers Compensation (ODG), published by the Work Loss Data Institute, is to be recognized as the primary standard of reference, at the time of treatment, in determining the frequency and extent of services presumed to be medically necessary and appropriate for compensable injuries under this act, or in resolving such matters in the event a dispute arises. The medical treatment guidelines are not requirements, nor are they mandates or standards; they provide advice by identifying the care most likely to benefit injured workers. The guidelines shall be evidence-based, scientifically valid, outcome-focused, and designed to reduce excessive or inappropriate medical care while safeguarding necessary medical care.

B. Physicians providing care to an employee shall prescribe for the employee any necessary prescription drugs and over-the-counter alternatives to prescription medicine as clinically appropriate and as recommended under the Official Disability Guidelines. Prescriptions and nonprescription drugs that are not preferred, exceed or are not addressed by ODG require preauthorization and the preauthorization request shall include the prescribing doctor's drug regimen plan of care and the anticipated dosage or range of dosages.