Ind. Code § 12-15-6-3

Sec. 3. (a) A copayment shall be made by the recipient of Medicaid upon receipt of assistance. If a recipient of Medicaid does not make the copayment, the office may not require the provider to collect the copayment. However, a provider may not voluntarily waive the copayment by the recipient under this section.

(b) The office may adopt rules under IC 4-22-2 to prescribe that the copayment amount is not deducted from the reimbursement to the provider for services provided by the provider if a recipient of Medicaid does not make the copayment.