Alphabetic Index FY2027

I70.409

Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, unspecified extremity

FY2027Chapter 9: Diseases of the circulatory system/I70–I79 Diseases of arteries, arterioles and capillaries

BillableComplete code, valid to report

I70.409 (also written I70409) is a billable ICD-10-CM diagnosis code for unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, unspecified extremity. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 246 codes in category I70 (Atherosclerosis). The Alphabetic Index lists it under 2 entries. 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.

Inherited from I70.4 Atherosclerosis of autologous vein bypass graft(s) of the extremities
  • code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
Inherited from I70 Atherosclerosis
  • code to identify:
    • exposure to environmental tobacco smoke (Z77.22)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from I70 Atherosclerosis
  • arteriosclerotic cardiovascular disease (I25.1-)
  • arteriosclerotic heart disease (I25.1-)
  • atheroembolism (I75.-)
  • cerebral atherosclerosis (I67.2)
  • coronary atherosclerosis (I25.1-)
  • mesenteric atherosclerosis (K55.1)
  • precerebral atherosclerosis (I67.2)
  • primary pulmonary atherosclerosis (I27.0)
Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
  • 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.

Inherited from I70 Atherosclerosis
  • arteriolosclerosis
  • arterial degeneration
  • arteriosclerosis
  • arteriosclerotic vascular disease
  • arteriovascular degeneration
  • atheroma
  • endarteritis deformans or obliterans
  • senile arteritis
  • senile endarteritis
  • vascular degeneration

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 2 entries