ICD-10-CM > I00-I99 > I60-I69 > I60 > I60.3 I60.3 Nontraumatic subarachnoid hemorrhage from posterior communicating artery Non-Billable/Non-Specific Codes I60.30Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating arteryI60.31Nontraumatic subarachnoid hemorrhage from right posterior communicating arteryI60.32Nontraumatic subarachnoid hemorrhage from left posterior communicating artery