Mo. Rev. Stat. § 376.823: Prohibition on kickbacks not applicable for rebates for certain chronic illnesses.

Section 191.905 shall not apply to programs established by pharmaceutical companies for the purposes of providing a partial rebate of private health insurance co-payments and coinsurance to patients with multiple sclerosis or other chronic, potentially disabling, or life-threatening conditions who have been prescribed disease-managing medicines for which there are no generic equivalents.