Sec. 9.3. As used in this chapter, "health insurer" means the following:
(1) A health maintenance organization.
(2) A limited service health maintenance organization.
(3) An insurer that makes one (1) or more of the types of insurance described in Class 1(b) or Class 2(a) of IC 27-1-5-1.
(4) An insurer that files a health Annual Statement Blank in accordance with the applicable Annual Statement Instructions.