Indiana Code Title 4. State Offices and Administration § 4-4-2-2

Sec. 2. Whenever the governor, the president pro tempore of the senate, and the speaker of the house of representatives file with the supreme court a written statement suggesting that the lieutenant governor is unable to discharge the powers and duties of the lieutenant governor's office, the supreme court shall, after giving notice to the lieutenant governor of the date, time, and place of their meeting, meet within forty-eight (48) hours to decide the question and the decision shall be final.  Whenever the lieutenant governor files with the supreme court the lieutenant governor's written declaration that no inability exists, the supreme court shall meet within forty-eight (48) hours to decide whether no inability exists, and the decision shall be final.  Upon a decision that no inability exists, the lieutenant governor shall resume the powers and duties of the lieutenant governor's office.