ICD-10 Code I70.519 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.519 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, unspecified extremity
What it is
This code describes plaque-related narrowing in a nonautologous biological bypass graft in an extremity, with leg pain or cramping brought on by walking. Use it when the graft site is documented but the affected limb is not specified.
Clinical signs
Typical findings include exertional limb pain that improves with rest, reduced walking tolerance, and evidence of graft-related arterial insufficiency. Clinical features vary; refer to documentation.
When to use this code
Use I70.519 when the record states atherosclerosis of a nonautologous biological bypass graft in an arm or leg and also documents intermittent claudication. Choose this code when the provider does not specify which extremity is involved. You should confirm that the graft is biological and not autologous.
Do not use for
Do not use this code for native vessel atherosclerosis, graft occlusion without atherosclerosis, or claudication not linked to the bypass graft. Check documentation if the extremity or graft type is unclear.
Coding tip
Verify both the graft material and the presence of intermittent claudication before assigning I70.519.