Edging closer?
Actually, they probably are asking if you are having the proximal or distal bypass performed. This has to do with the length of intestine that is bypassed, not your surgical scar or length of hospital stay. Proximal vs. distal probably have different procedural code numbers for coverage purposes. Usually the doctor indicates which they are performing when they submit your claim to insurance; if they forgot to include it then it would seem normal to me that they are asking about it.
Good Luck.