A mattress apparatus that combines the functionality of a hospital bed with that of a bedpan is herein disclosed. A bedpan assembly is provided to temporarily replace a slidable mattress section in the middle of the mattress area. In use, a person confined to a bed can use the bedpan without exiting the bed, thereby avoiding undue physical stress. The bedpan is inserted under a buttock area for normal use using an integrated track system, and slid out being coincidentally replaced by the slidable mattress section, to return the bed to its original condition. The bedpan can be removed, emptied, and cleaned by the care-giver without disturbing the patient.