I67.1 vs I77.0
I67.1 (Cerebral aneurysm, nonruptured) compared with I77.0 (Arteriovenous fistula, acquired), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. I77.0 carries an Excludes2 note covering I67.1: “cerebral (I67.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I67.1Cerebral aneurysm, nonruptured | I77.0Arteriovenous fistula, acquired | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Cerebral aneurysm, nonruptured is a billable ICD-10-CM diagnosis code (I67.1). | Arteriovenous fistula, acquired is a billable ICD-10-CM diagnosis code (I77.0). |
| Includes | Cerebral aneurysm NOS Cerebral arteriovenous fistula, acquired Internal carotid artery aneurysm, intracranial portion Internal carotid artery aneurysm, NOS | Aneurysmal varix Arteriovenous aneurysm, acquired |
| Use additional code | code to identify presence of: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources