ICD-10 Code I70.208 – Unspecified atherosclerosis of native arteries of extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.208 – Unspecified atherosclerosis of native arteries of extremities, other extremity
What it is
This code identifies atherosclerosis in a native artery of an extremity when the affected vessel is in the “other extremity” category and the documentation does not specify the limb in more detail. It reflects plaque-related narrowing or hardening of the artery.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include diminished pulses, limb pain with walking, coolness, or poor perfusion, but the record must support peripheral arterial disease in the specified extremity.
When to use this code
Use this code when the provider documents atherosclerosis of a native extremity artery and identifies the site as another extremity, but does not name a more specific artery or limb detail. It is appropriate when the record supports arterial plaque disease without a more precise code option.
If the note says “unspecified” or gives incomplete laterality or vessel detail, you should code from the documented information only. Check documentation when the anatomy, laterality, or vessel type is unclear.
Do not use for
Do not use this code for atherosclerosis of bypass grafts, nonextremity arteries, or cases with a more specific extremity artery code. Do not assign it when the documentation clearly identifies a different limb or vessel.
Coding tip
Review the vascular note carefully for laterality and vessel detail before defaulting to I70.208.