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

This code signifies the presence of atherosclerosis affecting a bypass graft in an extremity, leading to ischemic rest pain. This condition indicates a failure or compromise of the revascularization procedure due to progressive plaque buildup within the graft itself. The "unspecified extremity" denotes that the specific limb affected is not documented.

Apply this code when documentation clearly states atherosclerosis of an extremity bypass graft causing rest pain, and the specific extremity (e.g., right leg, left arm) is not identified. This typically occurs in patients with a history of peripheral artery disease who have undergone bypass surgery and are now experiencing recurrent or worsening ischemic symptoms. Supporting documentation includes physician notes detailing the graft involvement, rest pain, and imaging studies confirming graft stenosis or occlusion due to atherosclerosis.

• Ensure documentation specifies "rest pain" as the symptom; claudication or other ischemic symptoms require different codes.
• If the specific extremity is known, a more precise code from the I70.72- series should be used (e.g., I70.721 for right lower extremity).
• This code is typically a secondary diagnosis, with the underlying peripheral artery disease (e.g., I70.2- series) often coded as the primary reason for the encounter.