Notwithstanding language to the contrary elsewhere contained herein, if a licensed physician certifies in writing to an insurer within seventy-two (72) hours of an admission that the insured person admitted was in need of emergency admission to hospital care, such shall constitute a prima facie case of the medical necessity of the admission. An emergency admission results from sudden onset of a medical condition manifested by acute symptoms of sufficient severity that absence of immediate inpatient hospitalization could reasonably result in:
15 Miss. Code. R. 16-1-82.7.6