Aneurysm of heart

This code represents a localized, abnormal dilation or bulging of the heart wall, typically a ventricle. It is most commonly a sequela of a myocardial infarction, where the damaged heart muscle thins and weakens, leading to the outward pouching. This condition can impair cardiac function and increase the risk of complications such as arrhythmias, thrombus formation, and heart failure.

Use this code when documentation clearly indicates a diagnosis of an aneurysm affecting the heart, often specified as a ventricular aneurysm. This diagnosis is typically supported by imaging studies such as echocardiography, MRI, or CT scans, which visualize the abnormal cardiac wall contour. It is frequently seen in patients with a history of prior myocardial infarction.

• Always code the underlying cause of the aneurysm (e.g., previous myocardial infarction) if known and still relevant.
• Distinguish from dissecting aortic aneurysms, which are coded differently and involve the aorta, not the heart wall itself.
• Ensure documentation specifies "heart" or "ventricular" aneurysm to avoid confusion with aneurysms of other vessels.