With ICD9, our office always coded 440.20 and 443.9, but now with ICD10, it states not to code I79.3. PVD, Unspecified with I70.2 - I70.7 Atherosclerosis of the extremities. Does anyone know why? Also, if I could only code one of them, which should I code, I79.3 or I70.203?