Athscl nonaut bio bypass of the right leg w ulcer of calf

This code describes the presence of atherosclerosis affecting a non-autologous biological bypass graft in the right leg, specifically complicated by ulceration located on the calf. This indicates a failure or deterioration of the bypass graft due to plaque buildup, leading to tissue breakdown in the lower leg.

Use this code for patients presenting with documented atherosclerosis within a xenograft or allograft bypass in the right leg, where a calf ulcer is directly attributed to the graft's compromised patency. Documentation should clearly specify the graft type (non-autologous biological), its location in the right leg, and the presence and location of the ulceration.

• Ensure documentation specifies "non-autologous biological" graft; do not use for synthetic or autologous grafts.
• Verify the ulceration is on the calf and directly related to the graft's atherosclerotic disease.
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when managing complications of the graft.