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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  • I82.B29—

    Chronic embolism and thrombosis of unspecified subclavian vein

  • I82.C11—

    Acute embolism and thrombosis of right internal jugular vein

  • I82.C12—

    Acute embolism and thrombosis of left internal jugular vein

  • I82.C13—

    Acute embolism and thrombosis of internal jugular vein, bilateral

  • I82.C19—

    Acute embolism and thrombosis of unspecified internal jugular vein

  • I82.C21—

    Chronic embolism and thrombosis of right internal jugular vein

  • I82.C22—

    Chronic embolism and thrombosis of left internal jugular vein

  • I82.C23—

    Chronic embolism and thrombosis of internal jugular vein, bilateral

  • I82.C29—

    Chronic embolism and thrombosis of unspecified internal jugular vein

  • I83.001—

    Varicose veins of unspecified lower extremity with ulcer of thigh

  • I83.002—

    Varicose veins of unspecified lower extremity with ulcer of calf

  • I83.003—

    Varicose veins of unspecified lower extremity with ulcer of ankle

  • I83.004—

    Varicose veins of unspecified lower extremity with ulcer of heel and midfoot

  • I83.005—

    Varicose veins of unspecified lower extremity with ulcer other part of foot

  • I83.008—

    Varicose veins of unspecified lower extremity with ulcer other part of lower leg

  • I83.009—

    Varicose veins of unspecified lower extremity with ulcer of unspecified site

  • I83.011—

    Varicose veins of right lower extremity with ulcer of thigh

  • I83.012—

    Varicose veins of right lower extremity with ulcer of calf

  • I83.013—

    Varicose veins of right lower extremity with ulcer of ankle

  • I83.014—

    Varicose veins of right lower extremity with ulcer of heel and midfoot

  • I83.015—

    Varicose veins of right lower extremity with ulcer other part of foot

  • I83.018—

    Varicose veins of right lower extremity with ulcer other part of lower leg

  • I83.019—

    Varicose veins of right lower extremity with ulcer of unspecified site

  • I83.021—

    Varicose veins of left lower extremity with ulcer of thigh

  • I83.022—

    Varicose veins of left lower extremity with ulcer of calf

  • I83.023—

    Varicose veins of left lower extremity with ulcer of ankle

  • I83.024—

    Varicose veins of left lower extremity with ulcer of heel and midfoot

  • I83.025—

    Varicose veins of left lower extremity with ulcer other part of foot

  • I83.028—

    Varicose veins of left lower extremity with ulcer other part of lower leg

  • I83.029—

    Varicose veins of left lower extremity with ulcer of unspecified site

  • I83.10—

    Varicose veins of unspecified lower extremity with inflammation

  • I83.11—

    Varicose veins of right lower extremity with inflammation

  • I83.12—

    Varicose veins of left lower extremity with inflammation

  • I83.201—

    Varicose veins of unspecified lower extremity with both ulcer of thigh and inflammation

  • I83.202—

    Varicose veins of unspecified lower extremity with both ulcer of calf and inflammation

  • I83.203—

    Varicose veins of unspecified lower extremity with both ulcer of ankle and inflammation

  • I83.204—

    Varicose veins of unspecified lower extremity with both ulcer of heel and midfoot and inflammation

  • I83.205—

    Varicose veins of unspecified lower extremity with both ulcer other part of foot and inflammation

  • I83.208—

    Varicose veins of unspecified lower extremity with both ulcer of other part of lower extremity and inflammation

  • I83.209—

    Varicose veins of unspecified lower extremity with both ulcer of unspecified site and inflammation

  • I83.211—

    Varicose veins of right lower extremity with both ulcer of thigh and inflammation

  • I83.212—

    Varicose veins of right lower extremity with both ulcer of calf and inflammation

  • I83.213—

    Varicose veins of right lower extremity with both ulcer of ankle and inflammation

  • I83.214—

    Varicose veins of right lower extremity with both ulcer of heel and midfoot and inflammation

  • I83.215—

    Varicose veins of right lower extremity with both ulcer other part of foot and inflammation

  • I83.218—

    Varicose veins of right lower extremity with both ulcer of other part of lower extremity and inflammation

  • I83.219—

    Varicose veins of right lower extremity with both ulcer of unspecified site and inflammation

  • I83.221—

    Varicose veins of left lower extremity with both ulcer of thigh and inflammation

  • I83.222—

    Varicose veins of left lower extremity with both ulcer of calf and inflammation

  • I83.223—

    Varicose veins of left lower extremity with both ulcer of ankle and inflammation

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