U.S. ICD-10-CM reference · FY2027
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I10Billable / specificCurrent

Essential (primary) hypertension

Reference checks do not establish clinical appropriateness or guarantee reimbursement.

HierarchyI10-I1A · I10

Code-level instructions

Includes
  • high blood pressure
  • hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Excludes 1

hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Excludes 2
  • essential (primary) hypertension involving vessels of brain (I60-I69)
  • essential (primary) hypertension involving vessels of eye (H35.0-)

Inherited instructions

I10-I1A · Hypertensive diseases (I10-I1A)

Excludes 1
  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)
Excludes 2

hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Use additional code
  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Chapters 9 · Diseases of the circulatory system (I00-I99)

Excludes 2
  • 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.-)
Code edition