I70.66
Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene
I70.66 is a non-billable ICD-10-CM code header for atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I70.661 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, right leg; I70.662 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, left leg; I70.663 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, bilateral legs; I70.668 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, other extremity and 1 more. Its coding notes include a Use additional code instruction and 18 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Includes
Further defines or gives examples of the content of the category.
- arteriolosclerosis
- arterial degeneration
- arteriosclerosis
- arteriosclerotic vascular disease
- arteriovascular degeneration
- atheroma
- endarteritis deformans or obliterans
- senile arteritis
- senile endarteritis
- vascular degeneration
More specific codes under I70.66 5
- I70.661Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, right legBillable
- I70.662Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, left legBillable
- I70.663Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, bilateral legsBillable
- I70.668Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, other extremityBillable
- I70.669Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, unspecified extremityBillable