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I10

✓ Billable

Essential (primary) hypertension

Diseases of the circulatory system (I00-I99)

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✅ Includes

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

❌ Excludes1

direct

Cannot be coded with I10

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

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

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Code Information

CodeI10
BillableYes
CategoryDiseases of the circulatory system (I00-I99)
Excludes11 rule(s)
Excludes22 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)