Indiana Code Title 12. Human Services § 12-7-2-136

(1) For purposes of IC 12-24-1-4, an individual who is admitted to a state institution for observation, diagnosis, or treatment.

(2) For purposes of IC 12-24-7, the meaning set forth in IC 12-24-7-1.

(3) For purposes of IC 12-24-6, IC 12-24-13, IC 12-24-14, and IC 12-24-15, an individual with a mental illness, an individual who appears to have a mental illness, or an individual with an intellectual disability who is:

(4) For purposes of IC 12-24-17, the meaning set forth in IC 12-24-17-2.

(5) For purposes of IC 12-27, an individual receiving mental health services or developmental training.  The term includes a client of a service provider.