Sales and rentals to exempt institutions must be substantiated by sales invoices and other records. Sales and rentals to all other institutions are subject to the regular retail sales or use tax. From and after July 1, 1999, the portion of sales and rentals paid by Medicare and Medicaid are exempt from sales or use tax. From and after July 1, 2009, the entire sale or rental, when payment for such is made in part or in whole by Medicare or Medicaid, is exempt from sales or use tax.
35 Miss. Code. R. 4-12-02-109