2025 ICD-10-CM Diagnosis Code I60.4

Nontraumatic subarachnoid hemorrhage from basilar artery

• I60.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2025 edition of ICD-10-CM I60.4 became effective on October 1, 2024.
• This is the American ICD-10-CM version of I60.4 – other international versions of ICD-10 I60.4 may differ.

The following code(s) above I60.4 contain annotation back-references

 that may be applicable to I60.4:

• I00-I99  Diseases of the circulatory system
• I60-I69  Cerebrovascular diseases
• I60  Nontraumatic subarachnoid hemorrhage

Approximate Synonyms

• Nontraumatic basilar artery subarachnoid hemorrhage
• Subarachnoid hemorrhage, nontraumatic, basilar artery

ICD-10-CM I60.4 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 020 Intracranial vascular procedures with principal diagnosis hemorrhage with mcc
• 021 Intracranial vascular procedures with principal diagnosis hemorrhage with cc
• 022 Intracranial vascular procedures with principal diagnosis hemorrhage without cc/mcc
• 023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
• 024 Craniotomy with major device implant or acute complex cns principal diagnosis without mcc
• 064 Intracranial hemorrhage or cerebral infarction with mcc
• 065 Intracranial hemorrhage or cerebral infarction with cc or tpa in 24 hours
• 066 Intracranial hemorrhage or cerebral infarction without cc/mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert I60.4 to ICD-9-CMCode History

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change
• 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I60.4:

• Hemorrhage, hemorrhagic (concealed) R58
  • intracranial (nontraumatic) I62.9
    • subarachnoid (nontraumatic) (from) I60.9
      • intracranial (cerebral) I60.7
        • basilar I60.4