2026 ICD-10-CM Diagnosis Code I60.9Nontraumatic subarachnoid hemorrhage, unspecified

ICD-10-CM Codes›I00–I99›I60-I69›I60

ICD-10-CM I60.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I60.9 is a billable ICD-10-CM diagnosis code for nontraumatic subarachnoid hemorrhage, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute hemorrhagic cerebrovascular disease.

Code Identity

ICD-10-CM Code
I60.9
Billable Status
Yes — Valid for Submission
Code Describes
Nontraumatic subarachnoid hemorrhage, unspecified
Short Description
Nontraumatic subarachnoid hemorrhage, unspecified
Same as the full description in the CMS dataset.
Parent Code
I60
Nontraumatic subarachnoid hemorrhage

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI60-I69Cerebrovascular diseases
CategoryI60Nontraumatic subarachnoid hemorrhage
This CodeI60.9Nontraumatic subarachnoid hemorrhage, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Angiogram-negative subarachnoid hemorrhage
  • Cerebral ischemic stroke due to subarachnoid hemorrhage
  • Convexal subarachnoid hemorrhage
  • Cryptogenic non-traumatic subarachnoid hemorrhage of brain
  • Decreased flexion
  • Headache due to spontaneous subarachnoid hemorrhage
  • Hemorrhage into subarachnoid space of neuraxis
  • Hemorrhage into subarachnoid space of spine
  • Hemorrhage into subpial space of neuraxis
  • Non-aneurysmal perimesencephalic subarachnoid hemorrhage
  • Non-aneurysmal subarachnoid intracranial hemorrhage
  • Nontraumatic subarachnoid hemorrhage with brain compression
  • Nuchal rigidity
  • Nuchal rigidity due to subarachnoid hemorrhage
  • Perimesencephalic subarachnoid hemorrhage
  • Spontaneous subarachnoid hemorrhage
  • Subarachnoid hemorrhage
  • Subpial intracranial hemorrhage
  • Transient ischemic attack co-occurrent with subarachnoid hemorrhage

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Hemorrhage, hemorrhagic(concealed)
      • intracranial (nontraumatic)
        • subarachnoid (nontraumatic) (from)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR021
Acute hemorrhagic cerebrovascular disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Subarachnoid Hemorrhage

    bleeding into the intracranial or spinal subarachnoid space, most resulting from intracranial aneurysm rupture. it can occur after traumatic injuries (subarachnoid hemorrhage, traumatic). clinical features include headache; nausea; vomiting, nuchal rigidity, variable neurological deficits and reduced mental status.

  • Subarachnoid Hemorrhage, Traumatic

    bleeding into the subarachnoid space due to craniocerebral trauma. minor hemorrhages may be asymptomatic; moderate to severe hemorrhages may be associated with intracranial hypertension and vasospasm, intracranial.

Patient EducationClinical

Hemorrhagic Stroke

A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they need from blood, and they start to die within a few minutes. This can cause lasting brain damage, long-term disability, or even death.

The full article covers:

  • What is a hemorrhagic stroke?
  • What are the types of hemorrhagic stroke?
  • What causes hemorrhagic stroke?
  • What are the symptoms of a hemorrhagic stroke?
  • How is a hemorrhagic stroke diagnosed?
  • How is hemorrhagic stroke treated?
  • Can a hemorrhagic stroke be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I60.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
430 Subarachnoid hemorrhage
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I60.9Overview

Is I60.9 (Nontraumatic subarachnoid hemorrhage) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report nontraumatic subarachnoid hemorrhage, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of I60.9?

Under the General Equivalence Mappings, nontraumatic subarachnoid hemorrhage, unspecified converts to ICD-9-CM 430 (subarachnoid hemorrhage). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.