ICD-10-CM 2027
ICD-10 code for miliary congenital aneurysm
From the official ICD-10-CM alphabetic index entry “Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › miliary (congenital)”. Page updated September 29, 2026.
About coding miliary congenital aneurysm
The ICD-10-CM code for miliary congenital aneurysm is I67.1 (Cerebral aneurysm, nonruptured).
Within I67 (other cerebrovascular diseases), I67.1 is specifically for cerebral aneurysm, nonruptured. Related codes cover dissection of cerebral arteries, nonruptured (I67.0), cerebral atherosclerosis (I67.2), progressive vascular leukoencephalopathy (I67.3), hypertensive encephalopathy (I67.4), Moyamoya disease (I67.5), nonpyogenic thrombosis of intracranial venous system (I67.6), cerebral arteritis, not elsewhere classified (I67.7), other specified cerebrovascular diseases (I67.8) and 1 more.
Don't report I67.1 together with the conditions in its Excludes1 note: congenital cerebral aneurysm, nonruptured (Q28.-) and ruptured cerebral aneurysm (I60.7).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific miliary congenital aneurysm codes (official index)
- ruptured
Don't confuse with (Excludes1 for I67.1)
Common questions about miliary congenital aneurysm ICD-10 codes
What is the ICD-10 code for miliary congenital aneurysm?
- I67.1 — Cerebral aneurysm, nonruptured.
Is I67.1 billable?
- Yes. I67.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I67.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I67.1 as a principal diagnosis.
Is I67.1 a CC or MCC?
- No. I67.1 is neither a CC nor an MCC under MS-DRG v44.0.