Aneurysm of artery of upper extremity

This code signifies a localized, abnormal dilation or ballooning of an artery located in the upper limb, which includes the subclavian, axillary, brachial, radial, or ulnar arteries. This weakening of the arterial wall can lead to various complications, including rupture, thrombosis, or embolization.

Apply this code when documentation clearly identifies an aneurysm affecting any artery of the upper extremity. This diagnosis is typically supported by imaging studies such as ultrasound, CT angiography, or MRI, confirming the presence and location of the arterial dilation.

• Specify the exact artery involved if documented (e.g., subclavian, brachial) using more specific codes if available, otherwise use this general code.
• Distinguish from pseudoaneurysms, which are typically coded differently.
• Consider sequencing with codes for any associated complications, such as rupture (I72.8) or thrombosis (I74.21).