Mississippi Code Title 41. Public Health § 41-83-25

(1) Every health insurance plan proposing to issue or deliver a health insurance policy or contract or administer a health benefit program which provides for the coverage of hospital and medical benefits and the utilization review of those benefits shall:

(2) Notwithstanding any other provisions of this chapter, for claims where the medical necessity of the provision of a covered benefit is disputed, a health service plan that does not meet the requirements of subsection (1) of this section shall pay any person or hospital entitled to reimbursement under the policy or contract.