ICD-10 Code I70.323 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, bilateral legs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.323 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, bilateral legs
What it is
This code identifies atherosclerosis affecting an unspecified bypass graft in the arm or leg arteries, with rest pain in both legs. It reflects reduced blood flow through the graft rather than native vessels.
Clinical signs
Typical findings include ischemic pain that occurs at rest, often worse when the legs are elevated or at night. Clinical features vary; refer to documentation for laterality, graft type, and evidence of limb ischemia.
When to use this code
Use this code when the provider documents atherosclerosis in a bypass graft of the extremities and specifically notes rest pain in both legs. It fits postoperative or chronic vascular follow-up records when the graft is the affected site. Confirm that the graft type is not specified and that the pain is attributed to ischemia.
Do not use for
Do not use it for native artery atherosclerosis without a bypass graft, or when rest pain is not documented. If the graft type or laterality is specified differently, check documentation.
Coding tip
Verify that “bilateral legs” and “unspecified bypass graft” are both documented before assigning I70.323.