I60 Nontraumatic subarachnoid hemorrhage

The ICD-10-CM code for Nontraumatic subarachnoid hemorrhage is I60 (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

Official Coding Guidelines

NIHSS (R29.7--) with acute stroke (I60-I63); sequence after stroke code(s)

i. NIHSS Stroke Scale The NIH stroke scale (NIHSS) codes (R29.7- -) can be used in conjunction with acute stroke codes (I60-I63) to identify the patient's neurological status and the severity of the stroke. The stroke scale codes should be sequenced after the acute stroke diagnosis code(s). At a minimum, report the initial score documented. If desired, a facility may choose to capture multiple stroke scale scores. See Section I.B.14. for NIHSS stroke scale documentation by clinicians other than patient's provider

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.

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