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ICD-10-CM category I15: Secondary hypertension

Category I15 is a heading in chapter 9 (Diseases of the circulatory system (I00-I99)), section Hypertensive diseases (I10-I1A). It is not billable; report one of the 5 complete codes below.

Notes that apply to every I15 code

Excludes1 (never coded together)
  • postprocedural hypertension (I97.3)
Excludes2 (not part of this condition, may be coded together)
  • secondary hypertension involving vessels of brain (I60-I69)
  • secondary hypertension involving vessels of eye (H35.0-)
Code also
  • underlying condition

Billable codes in I15

Billable FY2027 ICD-10-CM codes in category I15
CodeDescription
I15.0Renovascular hypertension
I15.1Hypertension secondary to other renal disorders
I15.2Hypertension secondary to endocrine disorders
I15.8Other secondary hypertension
I15.9Secondary hypertension, unspecified

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.