Aneurysm of iliac artery

This code signifies a localized, abnormal dilation or ballooning of an iliac artery, which are major blood vessels supplying the pelvis and lower limbs. This weakening of the arterial wall can occur in either the common, internal, or external iliac arteries.

Apply this code when documentation explicitly states a diagnosis of an iliac artery aneurysm. This includes both asymptomatic findings on imaging (e.g., ultrasound, CT, MRI) and symptomatic presentations such as pain or rupture.

• Specify laterality (left, right, bilateral) if documented, using appropriate subcodes.
• Distinguish from dissection of the iliac artery, which is coded differently.
• Code any associated rupture (I72.30) or other complications separately.