ICD-10 Code I11.9 – Hypertensive Heart Disease Without Heart Failure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I11.9 – Hypertensive heart disease without heart failure
What it is
I11.9 identifies heart disease caused by long-standing hypertension when heart failure is not documented. Use it for hypertensive cardiac involvement, not for uncomplicated high blood pressure alone.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include evidence of cardiac changes linked to hypertension, such as left ventricular hypertrophy or chronic hypertensive heart disease, without documented heart failure.
When to use this code
Use I11.9 when the provider documents hypertensive heart disease and explicitly states there is no heart failure. It fits encounters where the cardiac condition is attributed to hypertension, even if the patient also has essential hypertension documented separately. If heart failure is present, check documentation for the correct combination code.
Do not use for
Do not use this code for hypertension without heart disease, or for heart failure linked to hypertension. Do not assign it when the record only says “high blood pressure” and no hypertensive heart disease is documented.
Coding tip
Confirm both the hypertensive heart disease diagnosis and the absence of heart failure before assigning I11.9.