I72.3 ICD-10-CM Code: Aneurysm of iliac artery

Code

I72.3

Description

Aneurysm of iliac artery

HCC (V28)

No CMS-HCC V28 mapping

RAF reference coefficient

—

Billable

Yes

Payment year

2026

HCC Category Mapping

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work I72.3 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for I72.3

What This Code Means

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for I72.3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

• •Specify laterality (right/left) when documented
• •Confirm whether the aneurysm is ruptured, as this changes the code assignment

Clinical Significance

Iliac artery aneurysm is an important vascular condition that frequently coexists with abdominal aortic aneurysm and may be a site of significant morbidity if thrombosis or rupture occurs. Isolated iliac aneurysms are less common but can be clinically significant, particularly common iliac aneurysms. This code captures peripheral aneurysmal disease affecting the pelvic vasculature.

Documentation Requirements

• ✓Documentation specifying iliac artery aneurysm (common, internal, or external iliac)
• ✓Imaging confirmation with diameter measurement
• ✓Laterality (right, left, or bilateral)
• ✓Assessment of coexisting aortic aneurysm
• ✓Statement of intact vs ruptured status
• ✓Treatment plan (surveillance, endovascular, or surgical repair)

Commonly Confused Codes

• •I71.4: Abdominal aortic aneurysm, without rupture: aortic not iliac: though they often coexist, code both when documented
• •I72.4: Aneurysm of artery of lower extremity: iliac arteries are pelvic, not lower extremity
• •I72.8: Aneurysm of other specified arteries: iliac has its own specific code
• •I72.9: Aneurysm of unspecified site: do not use when iliac is documented

Child Codes