Athscl nonbiol bypass of extrm w intrmt claud, unsp extrm

This code describes the hardening and narrowing of a non-biological bypass graft in an extremity, leading to pain and cramping in the leg muscles during exercise that is relieved by rest. This condition, known as intermittent claudication, indicates compromised blood flow through the synthetic graft. The "unspecified extremity" modifier means the medical record does not specify whether the right or left extremity is affected.

Use this code when documentation clearly states atherosclerosis of a non-biological (e.g., synthetic) bypass graft in an extremity, and the patient experiences intermittent claudication. This code is appropriate when the specific extremity (right or left) is not documented. Supporting documentation would include physician notes detailing the diagnosis, symptoms, and the type of graft involved.

• Ensure the documentation specifies a non-biological bypass graft; do not use for autogenous grafts.
• Confirm the presence of intermittent claudication; do not use for rest pain or tissue loss.
• If the specific extremity (right or left) is documented, use the more specific codes I70.611 (right) or I70.612 (left).