ICD-10 Code I70.322 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.322 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, left leg
What it is
This code identifies atherosclerosis affecting an unspecified bypass graft in an extremity, with rest pain in the left leg. It indicates reduced blood flow through the graft and symptoms even when the patient is not walking.
Clinical signs
Typical findings include ischemic rest pain in the left leg, often worse at night or when the limb is elevated. Clinical features vary; refer to documentation for graft type, laterality, and evidence of peripheral arterial disease.
When to use this code
Use this code when the record documents atherosclerosis in a bypass graft to an extremity and specifically notes rest pain in the left leg. It is appropriate when the graft type is not stated, but the diagnosis is clear. Check documentation if the note does not confirm the side or the presence of rest pain.
Do not use for
Do not use it for atherosclerosis without rest pain, or when the pain is in a different limb. Do not assign it if the documentation only mentions native vessel disease or an unspecified leg symptom.
Coding tip
Verify that the provider documents both the bypass graft involvement and left-sided rest pain before assigning I70.322.