2026 ICD-10-CM Diagnosis Code I61.1Nontraumatic intracerebral hemorrhage in hemisphere, cortical

ICD-10-CM Codes›I00–I99›I60-I69›I61

ICD-10-CM I61.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I61.1 is a billable ICD-10-CM diagnosis code for nontraumatic intracerebral hemorrhage in hemisphere, cortical. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as cortical hemorrhage. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute hemorrhagic cerebrovascular disease.

Code Identity

ICD-10-CM Code
I61.1
Billable Status
Yes — Valid for Submission
Code Describes
Nontraumatic intracerebral hemorrhage in hemisphere, cortical
Short Description
Nontraumatic intcrbl hemorrhage in hemisphere, cortical
Parent Code
I61
Nontraumatic intracerebral hemorrhage

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI60-I69Cerebrovascular diseases
CategoryI61Nontraumatic intracerebral hemorrhage
This CodeI61.1Nontraumatic intracerebral hemorrhage in hemisphere, cortical

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cortical hemorrhage
  • Spontaneous hemorrhage of cortical intracerebral hemisphere

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Cerebral lobe hemorrhage (nontraumatic)
  • Superficial intracerebral hemorrhage (nontraumatic)

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)
      • cerebral, cerebrum
        • lobe
    • Hemorrhage, hemorrhagic(concealed)
      • cortical (brain)
    • Hemorrhage, hemorrhagic(concealed)
      • intracranial (nontraumatic)
        • intracerebral (nontraumatic) (in)
          • hemisphere
            • cortical (superficial)
    • Hemorrhage, hemorrhagic(concealed)
      • intracranial (nontraumatic)
        • intracerebral (nontraumatic) (in)
          • superficial

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

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 I61.1 to ICD-9-CMHistory

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

ICD-9-CM
431 Intracerebral 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 I61.1Overview

Is I61.1 (Nontraumatic intracerebral hemorrhage) a billable code?

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

What is the ICD-9 equivalent of I61.1?

Under the General Equivalence Mappings, nontraumatic intracerebral hemorrhage in hemisphere, cortical converts to ICD-9-CM 431 (intracerebral 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.