Mississippi Code Title 41. Public Health § 41-9-69

(1)(a) Hospital records shall be retained by hospitals in their original, microfilmed, or similarly reproduced form for a minimum period of ten (10) years from the date a patient is discharged.

(b) Graphic matter, images, X-ray films and like matter that were necessary to produce a diagnostic or therapeutic report shall be retained, preserved, and properly stored by hospitals in their original, microfilmed, or similarly reproduced form for a minimum period of three (3) years from the date a patient is discharged. Such graphic matter, images, X-ray film, and like matter shall be retained for longer periods when requested in writing by the patient or someone acting legally in his behalf.