Nontraumatic Subarachnoid Hemorrhage from Unspecified Carotid Siphon and Bifurcation

**Semantic type:** Finding

**Definition:** Evidence of nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation.

**Synonyms:** - Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation