ICD-10 Code I60.01 – Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I60.01 – Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation
What it is
This code identifies a spontaneous subarachnoid hemorrhage located at the right carotid siphon and bifurcation. It means bleeding has occurred around the brain without trauma, and the source is documented on the right side.
Clinical signs
Typical findings include sudden severe headache, neck stiffness, nausea, vomiting, or altered mental status. Imaging or clinical documentation should support subarachnoid hemorrhage and specify the right carotid siphon and bifurcation when available.
When to use this code
Use this code when the record clearly states a nontraumatic subarachnoid hemorrhage involving the right carotid siphon and bifurcation. Apply it when the provider documents the site as the bleeding source or location. If laterality or exact site is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for traumatic subarachnoid hemorrhage or hemorrhage from another artery or side. If the documentation only says subarachnoid hemorrhage without a precise right-sided carotid location, check documentation.
Coding tip
Verify both nontraumatic cause and exact right-sided anatomic location before coding I60.01.