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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  • I71.51—

    Supraceliac aneurysm of the thoracoabdominal aorta, ruptured

  • I71.52—

    Paravisceral aneurysm of the thoracoabdominal aorta, ruptured

  • I71.60—

    Thoracoabdominal aortic aneurysm, without rupture, unspecified

  • I71.61—

    Supraceliac aneurysm of the thoracoabdominal aorta, without rupture

  • I71.62—

    Paravisceral aneurysm of the thoracoabdominal aorta, without rupture

  • I71.8—

    Aortic aneurysm of unspecified site, ruptured

  • I71.9—

    Aortic aneurysm of unspecified site, without rupture

  • I72.0—

    Aneurysm of carotid artery

  • I72.1—

    Aneurysm of artery of upper extremity

  • I72.2—

    Aneurysm of renal artery

  • I72.3—

    Aneurysm of iliac artery

  • I72.4—

    Aneurysm of artery of lower extremity

  • I72.5—

    Aneurysm of other precerebral arteries

  • I72.6—

    Aneurysm of vertebral artery

  • I72.8—

    Aneurysm of other specified arteries

  • I72.9—

    Aneurysm of unspecified site

  • I73.00—

    Raynaud's syndrome without gangrene

  • I73.01—

    Raynaud's syndrome with gangrene

  • I73.1—

    Thromboangiitis obliterans [Buerger's disease]

  • I73.81—

    Erythromelalgia

  • I73.89—

    Other specified peripheral vascular diseases

  • I73.9—

    Peripheral vascular disease, unspecified

  • I74.01—

    Saddle embolus of abdominal aorta

  • I74.09—

    Other arterial embolism and thrombosis of abdominal aorta

  • I74.10—

    Embolism and thrombosis of unspecified parts of aorta

  • I74.11—

    Embolism and thrombosis of thoracic aorta

  • I74.19—

    Embolism and thrombosis of other parts of aorta

  • I74.2—

    Embolism and thrombosis of arteries of the upper extremities

  • I74.3—

    Embolism and thrombosis of arteries of the lower extremities

  • I74.4—

    Embolism and thrombosis of arteries of extremities, unspecified

  • I74.5—

    Embolism and thrombosis of iliac artery

  • I74.8—

    Embolism and thrombosis of other arteries

  • I74.9—

    Embolism and thrombosis of unspecified artery

  • I75.011—

    Atheroembolism of right upper extremity

  • I75.012—

    Atheroembolism of left upper extremity

  • I75.013—

    Atheroembolism of bilateral upper extremities

  • I75.019—

    Atheroembolism of unspecified upper extremity

  • I75.021—

    Atheroembolism of right lower extremity

  • I75.022—

    Atheroembolism of left lower extremity

  • I75.023—

    Atheroembolism of bilateral lower extremities

  • I75.029—

    Atheroembolism of unspecified lower extremity

  • I75.81—

    Atheroembolism of kidney

  • I75.89—

    Atheroembolism of other site

  • I76—

    Septic arterial embolism

  • I77.0—

    Arteriovenous fistula, acquired

  • I77.1—

    Stricture of artery

  • I77.2—

    Rupture of artery

  • I77.3—

    Arterial fibromuscular dysplasia

  • I77.4—

    Celiac artery compression syndrome

  • I77.5—

    Necrosis of artery

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