A nonprofit health service plan may not deny a claim made under a contract, certificate, or policy of a nonprofit health service plan for an unfair or unfairly discriminatory reason; without just cause, require a person making a claim under a contract, certificate, or policy of a nonprofit health service plan to accept less than the amount due; or fail to notify in writing a subscriber or certificate holder of a nonprofit health service plan of a denial of a properly completed claim within 60 days after the plan receives the claim. If it appears an entity engaged in inproper conduct, they bear the burden of proof to show the act was permissible.