627.6141  Denial of claims.--Each claimant, or provider acting for a claimant, who has had a claim denied as not medically necessary must be provided an opportunity for an appeal to the insurer's licensed physician who is responsible for the medical necessity reviews under the plan or is a member of the plan's peer review group. The appeal may be by telephone, and the insurer's licensed physician must respond within a reasonable time, not to exceed 15 business days.