I72.0 Aneurysm of carotid artery

Billable ICD-10-CM code, FY2026.

Applicable to

• Aneurysm of common carotid artery
• Aneurysm of external carotid artery
• Aneurysm of internal carotid artery, extracranial portion

Excludes1 (never code together)

• aneurysm of internal carotid artery, intracranial portion (I67.1)
• aneurysm of internal carotid artery NOS (I67.1)

Applies from I72 Other aneurysm

Includes

• aneurysm (cirsoid) (false) (ruptured)

Excludes2 (not included here)

• acquired aneurysm (I77.0)
• aneurysm (of) aorta (I71.-)
• aneurysm (of) arteriovenous NOS (Q27.3-)
• carotid artery dissection (I77.71)
• cerebral (nonruptured) aneurysm (I67.1)
• coronary aneurysm (I25.4)
• coronary artery dissection (I25.42)
• dissection of artery NEC (I77.79)
• dissection of precerebral artery, congenital (nonruptured) (Q28.1)
• heart aneurysm (I25.3)
• iliac artery dissection (I77.72)
• precerebral artery, congential (nonruptured) (Q28.1)
• pulmonary artery aneurysm (I28.1)
• renal artery dissection (I77.73)
• retinal aneurysm (H35.0)
• ruptured cerebral aneurysm (I60.7)
• varicose aneurysm (I77.0)
• vertebral artery dissection (I77.74)

Risk adjustment (HCC)

• CMS-HCC V22: HCC 108 — Vascular Disease
• ESRD V24: HCC 108

MS-DRG index

Defines the logic of DRG(s) 299-301 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 442.81 Aneurysm of artery of neck (approximate)

Code annotations containing back-references to I72.0

Back-references to I72.0

• Type 2 Excludes: I72.5 Aneurysm of other precerebral arteries ("aneurysm of carotid artery (I72.0)")
• Type 2 Excludes: I77.75 Dissection of other precerebral arteries ("aneurysm of carotid artery (I72.0)")
• Type 1 Excludes: Q28 Other congenital malformations of circulatory system ("ruptured malformation of precerebral vessels (I72.0)")

Diagnosis Index entries for I72.0

• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › carotid artery (common) (external)
• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › carotid artery (common) (external) › internal (intracranial) › extracranial portion
• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › neck

Nearby codes

• I72 Other aneurysm
• I72.0 Aneurysm of carotid artery (this code)
• I72.1 Aneurysm of artery of upper extremity
• I72.2 Aneurysm of renal artery
• I72.3 Aneurysm of iliac artery
• I72.4 Aneurysm of artery of lower extremity
• I72.5 Aneurysm of other precerebral arteries