Indiana Code Title 12. Human Services § 12-15-29-7

(1) the insurer receives from the office, electronically or by United States mail, a statement of the claims paid or medical services rendered by the office, together with a claim for reimbursement;  or

(2) the insurer receives a claim from a beneficiary stating that the beneficiary has applied for or has received Medicaid from the office in connection with the same claim.

(1) pay the obligation to the provider of service;  or

(2) if the office has provided Medicaid, pay the office.