2026 ICD-10-CM Diagnosis Code I62.03Nontraumatic chronic subdural hemorrhage

ICD-10-CM Codes›I00–I99›I60-I69›I62

ICD-10-CM I62.03
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I62.03 is a billable ICD-10-CM diagnosis code for nontraumatic chronic subdural hemorrhage. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as chronic intracranial subdural hematoma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute hemorrhagic cerebrovascular disease.

Code Identity

ICD-10-CM Code
I62.03
Billable Status
Yes — Valid for Submission
Code Describes
Nontraumatic chronic subdural hemorrhage
Short Description
Nontraumatic chronic subdural hemorrhage
Same as the full description in the CMS dataset.
Parent Code
I62.0
Nontraumatic subdural hemorrhage

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI60-I69Cerebrovascular diseases
CategoryI62Other and unspecified nontraumatic intracranial hemorrhage
This CodeI62.03Nontraumatic chronic subdural hemorrhage

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic intracranial subdural hematoma
  • Chronic nontraumatic intracranial subdural hematoma
  • Chronic nontraumatic intracranial subdural hemorrhage
  • Dementia due to chronic intracranial subdural hematoma
  • Non-traumatic hematoma of subdural space of neuraxis
  • Nontraumatic intracranial subdural hematoma
  • Nontraumatic intracranial subdural 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)
        • subdural (nontraumatic)
          • chronic

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 I62.03 to ICD-9-CMHistory

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

ICD-9-CM
432.1 Subdural 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 I62.03Overview

Is I62.03 (Nontraumatic subdural hemorrhage) a billable code?

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

What is the ICD-9 equivalent of I62.03?

Under the General Equivalence Mappings, nontraumatic chronic subdural hemorrhage converts to ICD-9-CM 432.1 (subdural 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.