Kan. Stat. § 40-2,168
An insurance company, nonprofit health service corporation, nonprofit medical and hospital service corporation or health maintenance organization that provides coverage for prescription drugs may not issue, deliver, execute or renew any health insurance policy or health service contract on an individual, group, blanket, franchise or association basis which excludes coverage of a prescription drug for cancer treatment on the grounds the prescription drug has not been approved by the federal food and drug administration for that covered indication if the prescription drug is recognized for treatment of the indication in one of the standard reference compendia or in substantially accepted peer-reviewed medical literature. The prescribing physician shall submit to the insurer documentation supporting the proposed off-label use or uses if requested by the insurer.
K.S.A. 40-2,168