Dilated cardiomyopathy

This code represents a primary myocardial disorder characterized by ventricular dilation and impaired systolic function, leading to progressive heart failure. The heart muscle becomes thin and stretched, reducing its ability to pump blood effectively.

Use this code when documentation explicitly states a diagnosis of dilated cardiomyopathy, often identified through echocardiography showing enlarged ventricles and reduced ejection fraction. It is applicable for both idiopathic and secondary forms where the underlying cause is not specified or is a separate, co-existing condition.

• Distinguish from hypertrophic or restrictive cardiomyopathies; documentation must specify "dilated."
• If an underlying cause (e.g., alcoholic, toxic, ischemic) is identified, code the underlying condition first, followed by this code, unless the cardiomyopathy is the primary reason for the encounter.
• Ensure documentation supports the diagnosis, typically including imaging findings and clinical assessment of heart failure symptoms.