I60.01
BillableNontraumatic subarachnoid hemorrhage from right 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 right carotid artery junction, not caused by trauma.
Coding Tips
- •This is a medical emergency requiring immediate documentation of the specific artery location
- •Verify laterality (right side) is clearly documented in the medical record before coding
Clinical Significance
Nontraumatic subarachnoid hemorrhage from the right carotid siphon and bifurcation represents a lateralized cerebrovascular emergency requiring emergent intervention. The carotid siphon is a common location for cerebral aneurysm formation, and rupture here causes devastating subarachnoid hemorrhage. Laterality documentation is critical for surgical planning and risk assessment.
Documentation Requirements
- ✓Provider must document nontraumatic subarachnoid hemorrhage specifically from the RIGHT carotid siphon and bifurcation
- ✓Imaging confirmation: computed tomography angiography or cerebral angiography showing the source
- ✓Underlying pathology: aneurysm, arteriovenous malformation, or other vascular anomaly
- ✓Neurological examination and Glasgow Coma Scale
- ✓Hunt and Hess or World Federation of Neurological Surgeons grading scale
- ✓Treatment plan: surgical clipping, endovascular coiling, or conservative management
Commonly Confused Codes
I60.00 — Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon: use only when laterality is unknownI60.02 — Nontraumatic subarachnoid hemorrhage from left carotid siphon: left-sided, not right-sidedI60.11 — Nontraumatic subarachnoid hemorrhage from right middle cerebral artery: different arterial locationI67.1 — Cerebral aneurysm, nonruptured: the underlying aneurysm before it rupturesS06.6X — Traumatic subarachnoid hemorrhage: traumatic etiology, not spontaneous
Code Hierarchy
└I60Nontraumatic subarachnoid hemorrhage└I60.0Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation└I60.01Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation
└I60.01Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation