ICD-10 Code I70.528 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.528 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, other extremity
What it is
This code identifies atherosclerotic narrowing in a nonautologous biological bypass graft in an extremity, with rest pain affecting the unspecified “other extremity.” It describes poor graft blood flow rather than native artery disease.
Clinical signs
Typical findings include ischemic rest pain, often worse at night or with elevation, and evidence of reduced perfusion in the affected limb. Clinical features vary; refer to documentation.
When to use this code
Use I70.528 when the provider documents atherosclerosis in a nonautologous biological bypass graft of an extremity and specifically notes rest pain. Choose this code when the affected limb is documented as the other extremity, not the right or left side named elsewhere.
It is appropriate when the record clearly links the pain to graft atherosclerosis and not to acute thrombosis, infection, or another vascular problem. Check documentation if laterality or graft type is unclear.
Do not use for
Do not use this code for native artery atherosclerosis, acute graft occlusion, or bypass graft disease without rest pain. Do not assign it if the record does not identify a nonautologous biological graft.
Coding tip
Verify both the graft type and the laterality wording; “other extremity” is only correct when the documentation does not specify right or left.