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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  • I82.469—

    Acute embolism and thrombosis of unspecified calf muscular vein

  • I82.491—

    Acute embolism and thrombosis of other specified deep vein of right lower extremity

  • I82.492—

    Acute embolism and thrombosis of other specified deep vein of left lower extremity

  • I82.493—

    Acute embolism and thrombosis of other specified deep vein of lower extremity, bilateral

  • I82.499—

    Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity

  • I82.4Y1—

    Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity

  • I82.4Y2—

    Acute embolism and thrombosis of unspecified deep veins of left proximal lower extremity

  • I82.4Y3—

    Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral

  • I82.4Y9—

    Acute embolism and thrombosis of unspecified deep veins of unspecified proximal lower extremity

  • I82.4Z1—

    Acute embolism and thrombosis of unspecified deep veins of right distal lower extremity

  • I82.4Z2—

    Acute embolism and thrombosis of unspecified deep veins of left distal lower extremity

  • I82.4Z3—

    Acute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral

  • I82.4Z9—

    Acute embolism and thrombosis of unspecified deep veins of unspecified distal lower extremity

  • I82.501—

    Chronic embolism and thrombosis of unspecified deep veins of right lower extremity

  • I82.502—

    Chronic embolism and thrombosis of unspecified deep veins of left lower extremity

  • I82.503—

    Chronic embolism and thrombosis of unspecified deep veins of lower extremity, bilateral

  • I82.509—

    Chronic embolism and thrombosis of unspecified deep veins of unspecified lower extremity

  • I82.511—

    Chronic embolism and thrombosis of right femoral vein

  • I82.512—

    Chronic embolism and thrombosis of left femoral vein

  • I82.513—

    Chronic embolism and thrombosis of femoral vein, bilateral

  • I82.519—

    Chronic embolism and thrombosis of unspecified femoral vein

  • I82.521—

    Chronic embolism and thrombosis of right iliac vein

  • I82.522—

    Chronic embolism and thrombosis of left iliac vein

  • I82.523—

    Chronic embolism and thrombosis of iliac vein, bilateral

  • I82.529—

    Chronic embolism and thrombosis of unspecified iliac vein

  • I82.531—

    Chronic embolism and thrombosis of right popliteal vein

  • I82.532—

    Chronic embolism and thrombosis of left popliteal vein

  • I82.533—

    Chronic embolism and thrombosis of popliteal vein, bilateral

  • I82.539—

    Chronic embolism and thrombosis of unspecified popliteal vein

  • I82.541—

    Chronic embolism and thrombosis of right tibial vein

  • I82.542—

    Chronic embolism and thrombosis of left tibial vein

  • I82.543—

    Chronic embolism and thrombosis of tibial vein, bilateral

  • I82.549—

    Chronic embolism and thrombosis of unspecified tibial vein

  • I82.551—

    Chronic embolism and thrombosis of right peroneal vein

  • I82.552—

    Chronic embolism and thrombosis of left peroneal vein

  • I82.553—

    Chronic embolism and thrombosis of peroneal vein, bilateral

  • I82.559—

    Chronic embolism and thrombosis of unspecified peroneal vein

  • I82.561—

    Chronic embolism and thrombosis of right calf muscular vein

  • I82.562—

    Chronic embolism and thrombosis of left calf muscular vein

  • I82.563—

    Chronic embolism and thrombosis of calf muscular vein, bilateral

  • I82.569—

    Chronic embolism and thrombosis of unspecified calf muscular vein

  • I82.591—

    Chronic embolism and thrombosis of other specified deep vein of right lower extremity

  • I82.592—

    Chronic embolism and thrombosis of other specified deep vein of left lower extremity

  • I82.593—

    Chronic embolism and thrombosis of other specified deep vein of lower extremity, bilateral

  • I82.599—

    Chronic embolism and thrombosis of other specified deep vein of unspecified lower extremity

  • I82.5Y1—

    Chronic embolism and thrombosis of unspecified deep veins of right proximal lower extremity

  • I82.5Y2—

    Chronic embolism and thrombosis of unspecified deep veins of left proximal lower extremity

  • I82.5Y3—

    Chronic embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral

  • I82.5Y9—

    Chronic embolism and thrombosis of unspecified deep veins of unspecified proximal lower extremity

  • I82.5Z1—

    Chronic embolism and thrombosis of unspecified deep veins of right distal lower extremity

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