2026 ICD-10-CM Diagnosis Code G93.1Anoxic brain damage, not elsewhere classified

ICD-10-CM Codes›G00–G99›G89-G99›G93

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

G93.1 is a billable ICD-10-CM diagnosis code for anoxic brain damage, not elsewhere classified. 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 Coma; stupor; and brain damage.

Code Identity

ICD-10-CM Code
G93.1
Billable Status
Yes — Valid for Submission
Code Describes
Anoxic brain damage, not elsewhere classified
Short Description
Anoxic brain damage, not elsewhere classified
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 CodeG93.1Anoxic brain damage, not elsewhere classified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute anoxic encephalopathy
  • Anoxia of brain
  • Anoxic brain damage complication
  • Anoxic brain damage during AND/OR resulting from a procedure
  • Anoxic encephalopathy
  • Anoxic encephalopathy due to asphyxiation
  • Anoxic encephalopathy due to cardiac arrest
  • Anoxic encephalopathy due to respiratory arrest
  • Anoxic-ischemic encephalopathy
  • Brain disorder resulting from a period of impaired oxygen delivery to the brain
  • Cerebral anoxia complication
  • Cerebral anoxia following anesthesia AND/OR sedation in labor AND/OR delivery
  • Cerebral anoxia following ectopic pregnancy
  • Cerebral anoxia following molar pregnancy
  • Cerebral anoxia following obstetric procedure
  • Chorea due to cerebral anoxia
  • Chronic anoxic encephalopathy
  • Chronic hypoxic-ischemic brain injury
  • Delayed post-hypoxic leukoencephalopathy
  • Dementia associated with cerebral anoxia
  • Dystonia due to cerebral anoxia
  • Epilepsy due to perinatal anoxic-ischemic brain injury
  • Failed attempted termination of pregnancy with cerebral anoxia
  • Hypoxia of brain
  • Hypoxic-ischemic coma
  • Miscarriage with cerebral anoxia
  • Obstetrical central nervous system complication of anesthesia AND/OR sedation
  • Obstetrical complication of anesthesia AND/OR sedation
  • Oxygen supply absent
  • Post-anoxic myoclonus
  • Post-asphyxial encephalopathy

Tabular List NotesGuidance

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

Type 1 Excludes

  • cerebral anoxia due to anesthesia during labor and delivery O74.3
  • cerebral anoxia due to anesthesia during the puerperium O89.2
  • neonatal anoxia P84

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.

    • Anoxia(pathological)
      • cerebral
    • Damage
      • brain (nontraumatic)
        • anoxic, hypoxic

Clinical ClassificationClinical

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

CCSR NVS013
Coma; stupor; and brain damage
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 G93.1 to ICD-9-CMHistory

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

ICD-9-CM
348.1 Anoxic brain damage
Exact Match The mapping is direct, with no qualifiers.

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 G93.1Overview

Is G93.1 (Other disorders of brain) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report anoxic brain damage, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G93.1?

Under the General Equivalence Mappings, anoxic brain damage, not elsewhere classified converts to ICD-9-CM 348.1 (anoxic brain damage). The mapping is a direct match.

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.