Indiana Code Title 34. Civil Law and Procedure § 34-18-2-22

Sec. 22. “Patient” means an individual who receives or should have received health care from a health care provider, under a contract, express or implied, and includes a person having a claim of any kind, whether derivative or otherwise, as a result of alleged malpractice on the part of a health care provider.  Derivative claims include the claim of a parent or parents, guardian, trustee, child, relative, attorney, or any other representative of the patient including claims for loss of services, loss of consortium, expenses, and other similar claims.