I60.0 Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation

The ICD-10-CM code for Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation is I60.0 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

9: Diseases of the circulatory system (I00-I99)

Section

I60-I69: Cerebrovascular diseases (I60-I69)

Category I60

23 codes (18 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to I60.0:

• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › carotid artery (common) (external) › ruptured into brain
• Hemorrhage, hemorrhagic (concealed) › intracranial (nontraumatic) › subarachnoid (nontraumatic) (from) › intracranial (cerebral) artery › carotid siphon and bifurcation

Official Coding Guidelines

HTN cerebrovascular disease: code I60-I69 first, then HTN code

For hypertensive cerebrovascular disease, first assign the appropriate code from categories I60-I69, followed by the appropriate hypertension code.

Use I69 for sequelae due to I60-I67 conditions; timing of deficits

Category I69 is used to indicate conditions classifiable to categories I60- I67 as the causes of sequela (neurologic deficits), themselves classified elsewhere. These “late effects” include neurologic deficits that persist after initial onset of conditions classifiable to categories I60-I67. The neurologic deficits caused by cerebrovascular disease may be present from the onset or may arise at any time after the onset of the condition classifiable to categories I60-I67.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool