upcode /ʌpˈkəʊd/verb 2/ˈʌpkəʊd/ noun 1forms 3 verb2 •(US) To change the diagnostic code of a patient's condition from the correct code to one for which a larger amount can be billed.Several factors appear to have fueled the PBD epidemic: […]; and diagnostic upcoding in the U.S. health system that rations treatment according to DSM diagnoses [ 14 ]. — 2014 •To give an improved code or rating to something.Introduction of more wagons fitted with vacuum brakes and roller-bearing axleboxes has made it possible to up-code trains conveying steel and coal traffic. — 1962 upcode /ˈʌpkəʊd/ noun1 •The behavioral norms which influence how software (or "downcode") is produced. formsupcoded · upcoding · upcodes