ICD-10-CM 2027
ICD-10 code for ulnar aneurysm
From the official ICD-10-CM alphabetic index entry “Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › ulnar”. Page updated September 29, 2026.
About coding ulnar aneurysm
The ICD-10-CM code for ulnar aneurysm is I72.1 (Aneurysm of artery of upper extremity).
Within I72 (other aneurysm), I72.1 is specifically for aneurysm of artery of upper extremity. Related codes cover carotid artery (I72.0), 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).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 299 (Peripheral Vascular Disorders with MCC, relative weight 1.5842), DRG 300 (Peripheral Vascular Disorders with CC, relative weight 1.0464) and DRG 301 (Peripheral Vascular Disorders without CC/MCC, relative weight 0.7133), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about ulnar aneurysm ICD-10 codes
What is the ICD-10 code for ulnar aneurysm?
- I72.1 — Aneurysm of artery of upper extremity.
Is I72.1 billable?
- Yes. I72.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I72.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I72.1 as a principal diagnosis.
Is I72.1 a CC or MCC?
- No. I72.1 is neither a CC nor an MCC under MS-DRG v44.0.