Indiana Code Title 12. Human Services § 12-15-29-4.5

(1) accept a Medicaid claim for a Medicaid recipient for three (3) years from the date the service was provided;  and

(2) respond to an inquiry by the office regarding the claim not later than sixty (60) days after receiving the inquiry.

(1) the date of submission of the claim;

(2) the type or format of the claim form;

(3) the method of submission of the claim;  or

(4) a failure to provide proper documentation at the point of sale that is the basis of the claim;

(1) after December 31, 2020, meet the requirements set forth in IC 27-1-37.5;

(2) conduct the prior authorization on a retrospective basis for claims where prior authorization is necessary;  and

(3) adjudicate any claim authorized in this manner as if the claim received prior authorization.