I do HCC risk coding and have a pt who had the placement of an AV shunt in preparation for dialysis, however the renal function improved enough at present to hold off on starting dialysis. Can we still code Z99.2 even though they have not yet started the dialysis, or is there another code that should be used? Tabular list does indicate "presence of AV shunt for dialysis".Am unsure since dialysis has not yet started. Thank you