I67.1
Cerebral aneurysm, nonruptured
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 16 never code together
I67code
Excludes1
- Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5-)I63.3-I63.5
- Occlusion and stenosis of precerebral artery causing cerebral infarction (I63.2-)I63.2-
Excludes2
- sequelae of the listed conditions (I69.8)I69.8
I67.1code
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 12
I67.1code
Inclusion terms
- Cerebral aneurysm NOS
- Cerebral arteriovenous fistula, acquired
- Internal carotid artery aneurysm, intracranial portion
- Internal carotid artery aneurysm, NOS
I60-I69block
Use additional code
- code to identify presence of:
- alcohol abuse and dependence (F10.-)F10.-
- exposure to environmental tobacco smoke (Z77.22)Z77.22
- history of tobacco dependence (Z87.891)Z87.891
- hypertension (I10-I1A)I10-I1A
- occupational exposure to environmental tobacco smoke (Z57.31)Z57.31
- tobacco dependence (F17.-)F17.-
- tobacco use (Z72.0)Z72.0
Index entries leading here 2
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
- Fistula (cutaneous) L98.8
Alongside this code 9 same parent — I67
I67.0 Dissection of cerebral arteries, nonruptured I67.2 Cerebral atherosclerosis I67.3 Progressive vascular leukoencephalopathy I67.4 Hypertensive encephalopathy I67.5 Moyamoya disease I67.6 Nonpyogenic thrombosis of intracranial venous system I67.7 Cerebral arteritis, not elsewhere classified I67.8 Other specified cerebrovascular diseases category I67.9 Cerebrovascular disease, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.