Miss. Code Ann. § 41-7-35

No hospital shall be allowed to charge, accept or retain any additional payment from or in behalf of any indigent patient for hospital services rendered while being cared for under the terms of Sections 41-7-1 through 41-7-45, unless it appears that the patient was wrongfully or mistakenly qualified or admitted as an indigent patient. This section shall not be construed, however, to prohibit any hospital from charging, accepting or retaining lawful payments or contributions from governmental or other public sources or from philanthropic or charitable sources having an impersonal interest in the patients involved.