Nelson v. Montana Schools Group Ins. Auth. [05/28/14] 2014 MTWCC 15 Where Respondent advised Petitioner in writing that she would need to seek preauthorization under ARM 24.29.1517(5)(d) for all future treatment with her out-of-state surgeon because she had reached MMI, Respondent had good cause to deny the surgeon’s charges when Petitioner failed to seek preauthorization.  While Respondent’s claims adjuster had earlier advised Petitioner that she could not contact Respondent directly after she obtained legal representation, nothing prevented her attorney from doing so on her behalf.