Convert: mov dx,[varx] into hex machine code. Varx is a word variable located at hex offset 1000 in the data segment.

The solution to this question 8B160100 when converted from assembler language to machine code. I understand where the '0100' (disp-low and disp-high, as 1000 is the hex offset and byte reversed) part of the answer comes from, but am having trouble with the '8B16' part of the answer. Could someone please explain that part? Thank you