Miss. Code Ann. § 71-9-7: Miss. Code Ann. § 71-9-7

(1) Except as otherwise provided in Section 71-9-9 of this chapter, an account administrator shall use the funds held in a medical savings account solely for the purpose of paying eligible medical expenses of the account holder, or his or her dependent, or to pay for an accident and health insurance policy, certificate or contract if the account holder would not otherwise have accident and health insurance coverage.

(2) The account holder may submit documentation for eligible medical expenses paid by the account holder during a tax year to the account administrator, and the account administrator shall reimburse the account holder for the eligible medical expenses out of the medical savings account.

(3) Upon the death of the account holder, the account administrator shall distribute the principal and accumulated interest of the medical savings account to the estate of the account holder, unless the account holder has designated a beneficiary in writing to the account administrator, in which case the accountant administrator shall make such distribution to the designated beneficiary.