I15
⚠ Non-billable
Secondary hypertension
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I15
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- postprocedural hypertension (I97.3)
Excludes2 — not included here, but may code together
- secondary hypertension involving vessels of brain (I60-I69)
- secondary hypertension involving vessels of eye (H35.0-)
Code also
- underlying condition
Frequently asked questions
What is ICD-10 code I15?
ICD-10-CM code I15 represents Secondary hypertension. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I15 billable?
No. I15 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is I15 in?
I15 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
Related codes in the I15 category
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