Nonischemic Cardiomyopathy ICD-10-CM Codes

Delve into the detailed guide on Nonischemic Cardiomyopathy ICD-10-CM codes. Grasp the codes, their billability, and their clinical significance.

By Patricia Buenaventura on Aug 8, 2025.

Fact Checked by Karina Jimenea.

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What ICD codes are used for non-ischemic cardiomyopathy?

Nonischemic cardiomyopathy refers to heart muscle diseases not caused by reduced blood flow to the heart. Accurate coding for this condition is essential for both clinical and billing purposes.

Here are some of the commonly used nonischemic cardiomyopathy ICD-10-CM codes:

I42.0 - Dilated cardiomyopathy: This code represents a condition where the heart's main pumping chamber, the left ventricle, becomes enlarged and weakened, reducing its ability to pump blood effectively.
I42.1 - Obstructive hypertrophic cardiomyopathy: This code is used for hypertrophic obstructive cardiomyopathy or when the walls of the heart chamber become thicker than normal.
I42.5 - Other restrictive cardiomyopathy: This code is used for types of restrictive cardiomyopathy not specified elsewhere, where the heart chambers cannot fill with blood appropriately.
I42.6 - Alcoholic cardiomyopathy: This code denotes heart muscle damage from excessive alcohol consumption.
I42.9 - Unspecified cardiomyopathy: This code is used for cardiomyopathy wherein the cause or type is unknown.

Which nonischemic cardiomyopathy ICD codes are billable?

All the ICD-10-CM codes mentioned for nonischemic cardiomyopathy are typically billable as they represent specific medical conditions that require intervention. Proper documentation is crucial to ensure accurate billing and prevent potential discrepancies.

Clinical information

Nonischemic cardiomyopathy can significantly impact heart function. Here's what clinicians and patients should be aware of:

Symptoms may include fatigue, shortness of breath, irregular heartbeats, and swelling of the legs and feet.
Risk factors include high blood pressure, a family history of heart attacks, alcohol use disorder, certain medications, autoimmune conditions, diabetes, and viral infections, to name a few.
The condition can be inherited or result from factors like viral infections, alcohol use, or certain medications.
Treatment may involve drugs, lifestyle changes, devices to regulate heart rhythm, or, in severe cases, heart transplantation.
Regular monitoring and consultation with a cardiologist are essential.

Synonyms include

Cardiac myopathy
Primary cardiomyopathy
Noncoronary cardiomyopathy
Idiopathic cardiomyopathy
Heart muscle disease
Congestive cardiomyopathy
Ventric
Dilated cardiomyopathy secondary to radiation/due to radiation

Commonly asked questions

Ischemic cardiomyopathy results from reduced blood flow to the heart due to coronary artery disease, while nonischemic cardiomyopathy is not caused by reduced blood flow.

While some forms of nonischemic cardiomyopathy may improve with treatment, others might be progressive. Early diagnosis and intervention are crucial.

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