I15
Non-billableSecondary hypertension
I15 is the ICD-10-CM code for Secondary hypertension. It is a non-billable category code — use a more specific child code such as I15.0 for billing.
- Status
- Header (non-billable)
- Chapter
- I00-I99
- Subcodes
- 5
- Edition
- FY2026
I00-I99 Diseases of the circulatory system
What this means — in plain language
MedlinePlus · NIHWhat is blood pressure? Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls. This is called diastolic pressure. Your blood pressure reading uses…
Read more about High Blood Pressure at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •postprocedural hypertension (I97.3)
Excludes2 — not included here
Notes
- •underlying condition
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
- What is ICD-10 code I15?
- I15 is the ICD-10-CM code for "Secondary hypertension". It falls under I00-I99 Diseases of the circulatory system.
- Is I15 a billable code?
- No — I15 is a non-billable header code. Use a more specific child code (such as I15.0) for billing.
- What is excluded from I15?
- Excludes1 (not coded here): postprocedural hypertension (I97.3).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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