A bed including a stepped deck is provided which is configured to support a mattress including a lower mattress section and an upper mattress section. The deck includes an upper deck, and a lower deck coupled to the upper deck by a deck side wall so that the lower deck is spaced apart from the upper deck to define a recess of the deck. The lower deck is configured to support the lower mattress section within the recess of the deck with the bottom surface of the lower mattress section engaging the lower deck. The side wall of the deck is configured to be located adjacent the side wall of the lower mattress section. The top surface of the lower mattress section is aligned generally in a plane of the upper deck. The upper deck is configured to support the upper mattress section with the top surface of the upper mattress section extending above the upper deck to provide a body support surface. The bottom surface of the upper mattress section engages the upper deck. A side rail coupled to the bed has a tucked position between the upper and lower decks.