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

This code describes the hardening and narrowing of a synthetic bypass graft in the arteries of the arms or legs, leading to pain in the extremity even at rest. This condition indicates significant compromise of blood flow through the artificial vessel.

Use this code when documentation specifies atherosclerosis affecting a nonbiological (e.g., Dacron, PTFE) bypass graft in an extremity, and the patient experiences rest pain. The medical record must clearly state the type of graft and the presence of rest pain, even if the specific extremity is not documented.

• Ensure the documentation specifies a "nonbiological" or "synthetic" graft; do not use for autologous vein grafts.
• Confirm "rest pain" is explicitly documented, not just claudication or exertional pain.
• If the specific extremity (left, right, bilateral) is known, a more specific code within the I70.62 series should be used.