1. (a) A rule adopted by the department of mental health concerning developmental disabilities under IC 16-13-1 (before its repeal by P.L.9-1991) is valid and effective until the division of disability, aging, and rehabilitative services adopts a rule under IC 4-22-2 that:

   1. (1) supersedes in whole or in part the department of mental health rule; or
   2. (2) repeals the department of mental health rule.

2. (b) Notwithstanding subsection (a), if a rule adopted by the department of mental health before January 1, 1992:

   1. (1) has not been superseded or repealed as provided in subsection (a); and

   2. (2) provides authority to the department of mental health that has been transferred to the division of disability, aging, and rehabilitative services under P.L.9-1991;

      that rule shall be interpreted to constitute an authorization to the division of disability, aging, and rehabilitative services and not the department of mental health.

As added by P.L.220-2011, SEC.253. Amended by P.L.168-2018, SEC.3; P.L.122-2026, SEC.24.