I60.0

Nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation

FY2027Chapter 9: Diseases of the circulatory system/I60–I69 Cerebrovascular diseases

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I60.0 is a non-billable ICD-10-CM code header for nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I60.00 Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation, I60.01 Nontraumatic subarachnoid hemorrhage from right carotid siphon and bifurcation and I60.02 Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation. Its coding notes include a Use additional code instruction, 2 Excludes1 entries and 11 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

Inherited from I60 Nontraumatic subarachnoid hemorrhage
  • code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Also from chapter/block level (8 notes)
Inherited from I60–I69 Cerebrovascular diseases
  • code to identify presence of:
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • history of tobacco dependence (Z87.891)
    • hypertension (I10-I1A)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from I60 Nontraumatic subarachnoid hemorrhage
  • syphilitic ruptured cerebral aneurysm (A52.05)
Also from chapter/block level (1 note)
Inherited from I60–I69 Cerebrovascular diseases
  • traumatic intracranial hemorrhage (S06.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from I60 Nontraumatic subarachnoid hemorrhage
  • sequelae of subarachnoid hemorrhage (I69.0-)
Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 2 entries

More specific codes under I60.0 3