the claimant is currently being treated for acute pain, treatment is governed by the body-site-specific Medical Treatment Guideline.  By way of example, when the claimant undergoes a lumbar surgical procedure, Medical Treatment Guidelines for the low back provide that narcotics should be primarily reserved for the treatment of severe back pain with the optimum duration of 3 to 7 days and a maximum duration of two weeks, with use beyond this period only in appropriate cases and any use beyond the maximum two weeks should be documented and justified based on the diagnosis and/or invasive procedures.  <em>See</em>, <u>New York State Workers’ Compensation Board, Mid And Low Back Injury Medical Treatment Guidelines</u>, Third Edition, September 15, 2014, Section D.7.g.  Pursuant to section D.7.g.i, routine use of opioids for acute, subacute, or chronic pain is not recommended.  However, the Guidelines do provide for limited use of opioids in acute situations when there is severe pain and, in conjunction, two or more efficacious treatment modalities.  <em>See</em>, § D.7.g.ii.  Finally, the body-site-specific Medical Treatment Guidelines specifically address when discontinuation is appropriate with one of the factors noted to be use beyond two weeks.  See, § D.7.g.ii.  The body-site-specific Guidelines also reference brief use following postoperative pain management, but again, note that use beyond 2 to 3 weeks for minor procedures, and 6 weeks for extensive surgical procedures, is the outside limit for use of opioids to treat acute pain.  <em>See</em>, § D.7.g.iii.