Indiana Code Title 27. Insurance § 27-1-2-2

Sec. 2. This article shall be applicable to all persons, firms, partnerships, corporations, associations, orders, societies, and systems and to associations operating as Lloyds, interinsurers, or individual underwriters authorized as of March 8, 1935, to make insurance under the provisions of any statute enacted prior to March 8, 1935, or organized or incorporated before or after March 8, 1935, under the provisions of any statute of this state, or which are doing or attempting to do, or which are representing that they are doing an insurance business in this state, or which are in process of organization for the purpose of doing or attempting to do such business.  All domestic, foreign, and alien companies authorized to do business in this state shall be subject to this article;  however, any not-for-profit corporation which pays death benefits to the owner of a valuable registered horse on the death of said horse shall for that purpose not be subject to this article.