ICD-10 Code I70.541 – Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of thigh (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.541 – Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of thigh
What it is
This code identifies atherosclerotic disease in a nonautologous biological bypass graft in the left leg, with an ulcer located on the thigh. Use it when documentation links the graft disease and the ulceration to the same limb.
Clinical signs
Typical findings include evidence of graft narrowing or blockage, poor limb perfusion, and a documented ulcer on the left thigh. Clinical features vary; refer to documentation.
When to use this code
Use I70.541 when the provider documents atherosclerosis affecting a nonautologous biological bypass graft in the left leg and specifies ulceration of the thigh. The ulcer must be part of the documented condition, not a separate unrelated wound. Check documentation if the graft type, laterality, or ulcer site is unclear.
Do not use for
Do not use this code for ulcers without documented atherosclerosis of the bypass graft, or for disease in a different leg or graft type. If the ulcer site is not the thigh, or the record does not support a biological graft, review the chart.
Coding tip
Verify laterality, graft type, and ulcer location together before assigning I70.541.