Ind. Code § 27-1-37-2

Sec. 2. As used in this chapter, "health maintenance organization" means a person that undertakes to provide or arrange for the delivery of health care services to individuals on a prepaid basis, except for the individual's responsibility for copayments or deductibles. The term includes a limited service health maintenance organization. The term does not include a staff-model health maintenance organization that employs a group of providers and that requires the providers to provide health care services solely to individuals who are entitled to coverage under a contract with the staff-model health maintenance organization or an affiliate of the staff-model health maintenance organization.