Athscl unsp type bypass of the extrm w rest pain, unsp extrm

This code signifies the hardening and narrowing of an unspecified type of bypass graft in the extremities, leading to chronic ischemic pain at rest. This condition indicates a failure or compromise of the revascularization procedure, resulting in insufficient blood flow to the limb even without exertion.

Use this code when documentation explicitly states atherosclerosis of a bypass graft in an extremity, the type of graft is not specified, and the patient is experiencing rest pain. This typically applies to patients who have undergone prior bypass surgery for peripheral artery disease and are now presenting with recurrent or worsening ischemic symptoms.

• Ensure the documentation specifies "rest pain" and an "unspecified type of bypass graft" in the extremities.
• Do not use if the specific type of bypass graft (e.g., autologous vein, nonautologous biological, synthetic) is documented; more specific codes exist.
• This code requires an additional code to identify the specific extremity affected, if known, or for laterality if not specified in the current code.