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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  • I97.42—

    Intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating other procedure

  • I97.51—

    Accidental puncture and laceration of a circulatory system organ or structure during a circulatory system procedure

  • I97.52—

    Accidental puncture and laceration of a circulatory system organ or structure during other procedure

  • I97.610—

    Postprocedural hemorrhage of a circulatory system organ or structure following a cardiac catheterization

  • I97.611—

    Postprocedural hemorrhage of a circulatory system organ or structure following cardiac bypass

  • I97.618—

    Postprocedural hemorrhage of a circulatory system organ or structure following other circulatory system procedure

  • I97.620—

    Postprocedural hemorrhage of a circulatory system organ or structure following other procedure

  • I97.621—

    Postprocedural hematoma of a circulatory system organ or structure following other procedure

  • I97.622—

    Postprocedural seroma of a circulatory system organ or structure following other procedure

  • I97.630—

    Postprocedural hematoma of a circulatory system organ or structure following a cardiac catheterization

  • I97.631—

    Postprocedural hematoma of a circulatory system organ or structure following cardiac bypass

  • I97.638—

    Postprocedural hematoma of a circulatory system organ or structure following other circulatory system procedure

  • I97.640—

    Postprocedural seroma of a circulatory system organ or structure following a cardiac catheterization

  • I97.641—

    Postprocedural seroma of a circulatory system organ or structure following cardiac bypass

  • I97.648—

    Postprocedural seroma of a circulatory system organ or structure following other circulatory system procedure

  • I97.710—

    Intraoperative cardiac arrest during cardiac surgery

  • I97.711—

    Intraoperative cardiac arrest during other surgery

  • I97.790—

    Other intraoperative cardiac functional disturbances during cardiac surgery

  • I97.791—

    Other intraoperative cardiac functional disturbances during other surgery

  • I97.810—

    Intraoperative cerebrovascular infarction during cardiac surgery

  • I97.811—

    Intraoperative cerebrovascular infarction during other surgery

  • I97.820—

    Postprocedural cerebrovascular infarction following cardiac surgery

  • I97.821—

    Postprocedural cerebrovascular infarction following other surgery

  • I97.88—

    Other intraoperative complications of the circulatory system, not elsewhere classified

  • I97.89—

    Other postprocedural complications and disorders of the circulatory system, not elsewhere classified

  • I99.8—

    Other disorder of circulatory system

  • I99.9—

    Unspecified disorder of circulatory system

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