Athscl nonaut bio bypass of the extrm w rest pain, right leg

This code signifies the hardening and narrowing of a non-native biological bypass graft in the right leg, leading to ischemic rest pain. This condition indicates a failure or significant compromise of the bypass, resulting in insufficient blood flow to the limb even at rest.

Apply this code when documentation confirms atherosclerosis affecting a biological graft (e.g., saphenous vein from a cadaver or animal) in the right lower extremity, and the patient experiences pain at rest due to this graft occlusion. Supporting documentation should specify the graft type, location, and the presence of rest pain.

• Ensure the documentation explicitly states "nonautologous biological bypass graft" and specifies the "right leg."
• Do not use this code for synthetic grafts or autologous grafts; separate codes exist for those scenarios.
• Confirm the presence of "rest pain" as a symptom; claudication alone would warrant a different code.