After reviewing the description of 33975-which discussed inflow conection, outflow connection and creating a pocket in abdomen---how could this code be correct for Impella 5.5 via a single conduit and not sewn in heart ?? This 33975 looks more appropriate for LVAD device like Heartmate , not impella. please can someone help me for our CV surgeons. Our current direction is 33990 with conduit , or unlisted