All ICD10 Codes
Chapter 9

I00–I99: Diseases of the Circulatory System

Diseases of the Circulatory System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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.-)
All CodesBillable Only
Internal Codes
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  • I70.698—

    Other atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremity

  • I70.699—

    Other atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity

  • I70.7—

    Atherosclerosis of other type of bypass graft(s) of the extremities

  • I70.70—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities

  • I70.701—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, right leg

  • I70.702—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, left leg

  • I70.703—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs

  • I70.708—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, other extremity

  • I70.709—

    Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity

  • I70.71—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication

  • I70.711—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, right leg

  • I70.712—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, left leg

  • I70.713—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs

  • I70.718—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, other extremity

  • I70.719—

    Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, unspecified extremity

  • I70.72—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain

  • I70.721—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, right leg

  • I70.722—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, left leg

  • I70.723—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs

  • I70.728—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, other extremity

  • I70.729—

    Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, unspecified extremity

  • I70.73—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration

  • I70.731—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of thigh

  • I70.732—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of calf

  • I70.733—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of ankle

  • I70.734—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of heel and midfoot

  • I70.735—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of foot

  • I70.738—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of lower leg

  • I70.739—

    Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of unspecified site

  • I70.74—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration

  • I70.741—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of thigh

  • I70.742—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of calf

  • I70.743—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of ankle

  • I70.744—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of heel and midfoot

  • I70.745—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of foot

  • I70.748—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of lower leg

  • I70.749—

    Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of unspecified site

  • I70.75—

    Atherosclerosis of other type of bypass graft(s) of other extremity with ulceration

  • I70.76—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene

  • I70.761—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, right leg

  • I70.762—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, left leg

  • I70.763—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, bilateral legs

  • I70.768—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, other extremity

  • I70.769—

    Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, unspecified extremity

  • I70.79—

    Other atherosclerosis of other type of bypass graft(s) of the extremities

  • I70.791—

    Other atherosclerosis of other type of bypass graft(s) of the extremities, right leg

  • I70.792—

    Other atherosclerosis of other type of bypass graft(s) of the extremities, left leg

  • I70.793—

    Other atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs

  • I70.798—

    Other atherosclerosis of other type of bypass graft(s) of the extremities, other extremity

  • I70.799—

    Other atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity

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