Physicians and clinics ordering state supplied vaccine must ensure they have billing mechanisms and practices in place that enable the association to accurately track vaccine delivered to association members' covered lives and must submit documentation in such a form as may be prescribed by the board in consultation with state physician organizations. Physicians and other persons providing childhood immunization are strongly encouraged to use state supplied vaccine whenever possible. Nothing in this chapter prohibits health carriers and third-party administrators from denying claims for vaccine serum costs when the serum or serums providing similar protection are provided or available via state supplied vaccine.