ICD-10 Code I70.298 – Other atherosclerosis of native arteries of extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.298 – Other atherosclerosis of native arteries of extremities, other extremity
What it is
I70.298 identifies atherosclerosis in a native artery of an extremity when the affected limb is the “other extremity” and the documentation does not fit a more specific lower or upper limb code. It refers to 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 peripheral perfusion, but the record should clearly link these signs to atherosclerotic disease in the specified extremity.
When to use this code
Use this code when the provider documents atherosclerosis of a native artery in an extremity and specifies the site as “other extremity” rather than a named arm or leg vessel. It is appropriate when the condition is not described by a more specific I70.2- code. You should rely on the documented vessel and laterality details.
Do not use for
Do not use it for atherosclerosis of bypass grafts, graft complications, or disease in non-native vessels. If the chart identifies a more specific extremity artery code, use that instead. Check documentation.
Coding tip
Verify that the record states native artery involvement and “other extremity” before assigning I70.298.