ICD-10 Code I70.512 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.512 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, left leg
What it is
This code identifies plaque buildup in a nonautologous biological bypass graft in the left leg, causing intermittent claudication. It means blood flow through the graft is narrowed enough to produce exertional leg pain.
Clinical signs
Typical findings include leg pain or cramping with walking that improves with rest, along with evidence of peripheral arterial disease affecting the graft. Clinical features vary; refer to documentation.
When to use this code
Use I70.512 when the provider documents atherosclerosis in a biological bypass graft of the left lower extremity and also notes intermittent claudication. The record should clearly identify the left leg and the graft type. If the laterality, graft type, or claudication is not documented, check documentation before coding.
Do not use for
Do not use this code for native-vessel atherosclerosis without a bypass graft, or for claudication that is not linked to the graft lesion. Do not assume the left side or biological graft type if the note is unclear.
Coding tip
Verify all three elements: graft type, left leg, and intermittent claudication, before assigning I70.512.