ICD-10-CM 2027
ICD-10 code for carotid artery aneurysm
From the official ICD-10-CM alphabetic index entry “Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › carotid artery (common) (external)”. Page updated September 29, 2026.
About coding carotid artery aneurysm
The ICD-10-CM code for carotid artery aneurysm is I72.0 (Aneurysm of carotid artery). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I72.0.
Within I72 (other aneurysm), I72.0 is specifically for aneurysm of carotid artery. Related codes cover artery of upper extremity (I72.1), renal artery (I72.2), iliac artery (I72.3), artery of lower extremity (I72.4), other precerebral arteries (I72.5), vertebral artery (I72.6), other specified arteries (I72.8) and unspecified site (I72.9).
Don't report I72.0 together with the conditions in its Excludes1 note: aneurysm of internal carotid artery, intracranial portion (I67.1) and aneurysm of internal carotid artery NOS (I67.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific carotid artery aneurysm codes (official index)
- internal (intracranial) I67.1 — Cerebral aneurysm, nonruptured
- extracranial portion I72.0 — Aneurysm of carotid artery
- ruptured into brain I60.0 — Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation
- syphilitic A52.09 — Other cardiovascular syphilis
- intracranial A52.05 — Other cerebrovascular syphilis
Don't confuse with (Excludes1 for I72.0)
Common questions about carotid artery aneurysm ICD-10 codes
What is the ICD-10 code for carotid artery aneurysm?
- I72.0 — Aneurysm of carotid artery. More specific codes apply when the documentation supports them: I67.1, I72.0, I60.0, A52.09 and others below.
What is the ICD-10 code for internal carotid artery aneurysm?
- I67.1 — Cerebral aneurysm, nonruptured.
What is the ICD-10 code for ruptured into brain carotid artery aneurysm?
- I60.0 — Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation (header code; choose a more specific subcode).
What is the ICD-10 code for syphilitic carotid artery aneurysm?
- A52.09 — Other cardiovascular syphilis.
Is I72.0 billable?
- Yes. I72.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I72.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I72.0 as a principal diagnosis.
Is I72.0 a CC or MCC?
- No. I72.0 is neither a CC nor an MCC under MS-DRG v44.0.