I60.00

Nontraumatic subarachnoid hemorrhage from unspecified carotid siphon and bifurcation

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 2 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 13 never code together

I60code

Excludes1

syphilitic ruptured cerebral aneurysm (A52.05)A52.05

Excludes2

sequelae of subarachnoid hemorrhage (I69.0-)I69.0-

I60-I69block

Excludes1

traumatic intracranial hemorrhage (S06.-)S06.-

I00-I99chapter

Excludes2

certain conditions originating in the perinatal period (P04-P96)P04-P96
certain infectious and parasitic diseases (A00-B99)A00-B99
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
systemic connective tissue disorders (M30-M36)M30-M36
transient cerebral ischemic attacks and related syndromes (G45.-)G45.-

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 9

I60code

Use additional code

code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)R29.7-

I60-I69block

Use additional code

code to identify presence of:
alcohol abuse and dependence (F10.-)F10.-
exposure to environmental tobacco smoke (Z77.22)Z77.22
history of tobacco dependence (Z87.891)Z87.891
hypertension (I10-I1A)I10-I1A
occupational exposure to environmental tobacco smoke (Z57.31)Z57.31
tobacco dependence (F17.-)F17.-
tobacco use (Z72.0)Z72.0

Index entries leading here 2

Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
- carotid artery (common) (external) I72.0
  - ruptured into brain I60.0
Hemorrhage, hemorrhagic (concealed) R58
- intracranial (nontraumatic) I62.9
  - subarachnoid (nontraumatic) (from) I60.9
    - intracranial (cerebral) artery I60.7
      - carotid siphon and bifurcation I60.0

Alongside this code 2 same parent — I60.0

I60.01 Ntrm subarach hemor from right carotid siphon and bifurc I60.02 Ntrm subarach hemorrhage from left carotid siphon and bifurc

Medications 1

4 Subarachnoid Hemorrhage drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC99 CMS28HCC248 ESRD21HCC99 ESRD24HCC99

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: I60.0
Block: I60-I69
Siblings: 2

Present FY2024–FY2027.