I60.02
BillableNontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation
HCC Category Mapping
V28HCC 248 — Cerebral Hemorrhage
0.289V24HCC 99 — Intracranial Hemorrhage
0.262ESRDHCC 99 — Intracranial Hemorrhage
0.000What This Code Means
Sudden bleeding in the space around the brain caused by a ruptured blood vessel at the left carotid artery junction, not caused by trauma.
Coding Tips
- •This is a medical emergency requiring immediate documentation of the specific artery location
- •Confirm left-sided location is documented; distinguish from right-sided hemorrhage (I60.01)
Clinical Significance
Nontraumatic subarachnoid hemorrhage from the left carotid siphon and bifurcation is a lateralized cerebrovascular catastrophe with high mortality. The left-sided designation is important for neurosurgical approach planning and correlating neurological deficits with the hemorrhage location. Long-term survivors often have significant cognitive and functional impairments.
Documentation Requirements
- ✓Provider must document nontraumatic subarachnoid hemorrhage specifically from the LEFT carotid siphon and bifurcation
- ✓Imaging confirmation showing left-sided source of hemorrhage
- ✓Underlying vascular pathology
- ✓Neurological status assessment
- ✓Severity grading (Hunt and Hess or equivalent)
- ✓Treatment plan and intervention details
Commonly Confused Codes
I60.00 — Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon: use only when laterality unknownI60.01 — Nontraumatic subarachnoid hemorrhage from right carotid siphon: right-sided, not left-sidedI60.12 — Nontraumatic subarachnoid hemorrhage from left middle cerebral artery: different arterial locationI60.7 — Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery: nonspecific sourceI67.1 — Cerebral aneurysm, nonruptured: unruptured aneurysm without hemorrhage
Code Hierarchy
└I60Nontraumatic subarachnoid hemorrhage└I60.0Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation└I60.02Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation
└I60.02Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation