I00-I99 - Diseases of the circulatory system

ICD-10-CM Chapter 9 · 10 sections · 80 categories · 1,807 codes · FY2027

Covers diseases of the heart and blood vessels including hypertension, ischemic heart disease, and cerebrovascular diseases.

Chapter Notes

Excludes 2 — Not Included HereFrom Chapter I00-I99

Not part of this code; report both codes when the patient has both conditions.

  • 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.-)

Categories in this Chapter (80)

I00-I02Acute rheumatic fever (I00-I02)(3)

I05-I09Chronic rheumatic heart diseases (I05-I09)(5)

I10-I1AHypertensive diseases (I10-I1A)(7)

I20-I25Ischemic heart diseases (I20-I25)(6)

I26-I28Pulmonary heart disease and diseases of pulmonary circulation (I26-I28)(3)

I30-I5AOther forms of heart disease (I30-I5A)(24)

I60-I69Cerebrovascular diseases (I60-I69)(9)

I70-I79Diseases of arteries, arterioles and capillaries (I70-I79)(10)

I80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)(9)

I95-I99Other and unspecified disorders of the circulatory system (I95-I99)(4)