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I15

⚠ Non-billable (Header)

Secondary hypertension

Diseases of the circulatory system (I00-I99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with I15

  • • postprocedural hypertension (I97.3)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

Child Codes (5)

I15.0Renovascular hypertensionI15.1Hypertension secondary to other renal disordersI15.2Hypertension secondary to endocrine disordersI15.8Other secondary hypertensionI15.9Secondary hypertension, unspecified

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Code Information

CodeI15
BillableNo — Header code
CategoryDiseases of the circulatory system (I00-I99)
Excludes11 rule(s)
Excludes22 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)