2026 ICD-10-CM Diagnosis Code G93.6Cerebral edema

ICD-10-CM Codes›G00–G99›G89-G99›G93

ICD-10-CM G93.6
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G93.6 is a billable ICD-10-CM diagnosis code for cerebral edema. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as cerebellar edema. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (neither hereditary nor degenerative).

Code Identity

ICD-10-CM Code
G93.6
Billable Status
Yes — Valid for Submission
Code Describes
Cerebral edema
Short Description
Cerebral edema
Same as the full description in the CMS dataset.
Parent Code
G93
Other disorders of brain

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG93Other disorders of brain
This CodeG93.6Cerebral edema

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cerebellar edema
  • Cerebral edema
  • Cytotoxic cerebral edema
  • Effects of high altitude
  • High altitude cerebral edema
  • Nontraumatic cerebellar edema
  • Non-traumatic cerebral edema
  • Periventricular cerebrospinal fluid edema
  • Vasogenic cerebral edema

Tabular List NotesGuidance

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

Type 1 Excludes

  • cerebral edema due to birth injury P11.0
  • traumatic cerebral edema S06.1

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.

    • Edema, edematous(infectious) (pitting) (toxic)
      • brain (cytotoxic) (vasogenic)
    • Edema, edematous(infectious) (pitting) (toxic)
      • intracranial
    • Effusion
      • brain (serous)
    • Effusion
      • cerebral
    • Effusion
      • cerebrospinal
        • vessel
    • Effusion
      • intracranial
    • Leukoencephalopathy
      • reversible, posterior

Clinical ClassificationClinical

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

CCSR NVS020
Other nervous system disorders (neither hereditary nor degenerative)
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.

Read the full article at MedlinePlus

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

Convert G93.6 to ICD-9-CMHistory

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

ICD-9-CM
348.5 Cerebral edema
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 G93.6Overview

Is G93.6 (Other disorders of brain) a billable code?

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

What is the ICD-9 equivalent of G93.6?

Under the General Equivalence Mappings, cerebral edema converts to ICD-9-CM 348.5 (cerebral edema). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.