2026 ICD-10-CM Diagnosis Code G83.81Brown-Sequard syndrome

ICD-10-CM Codes›G00–G99›G80-G83›G83

ICD-10-CM G83.81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G83.81 is a billable ICD-10-CM diagnosis code for Brown-Sequard syndrome. 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 Paralysis (other than cerebral palsy).

Code Identity

ICD-10-CM Code
G83.81
Billable Status
Yes — Valid for Submission
Code Describes
Brown-Sequard syndrome
Short Description
Brown-Sequard syndrome
Same as the full description in the CMS dataset.
Parent Code
G83.8
Other specified paralytic syndromes

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG80-G83Cerebral palsy and other paralytic syndromes
CategoryG83Other paralytic syndromes
This CodeG83.81Brown-Sequard syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Brown-Séquard syndrome
  • Brown-Séquard syndrome caused by radiation
  • Brown-Séquard syndrome due to cervical spondylosis
  • Brown-Séquard syndrome due to decompression sickness
  • Brown-Séquard syndrome due to fracture of vertebra
  • Brown-Séquard syndrome due to gunshot wound
  • Brown-Séquard syndrome due to ischemia
  • Brown-Séquard syndrome due to multiple sclerosis
  • Brown-Séquard syndrome due to neoplastic disease
  • Brown-Séquard syndrome due to prolapse of intervertebral disc
  • Brown-Séquard syndrome due to trauma
  • Myelopathy due to intervertebral disc disease

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.

    • Brown-Séquard disease, paralysis or syndrome
    • Paralysis, paralytic(complete) (incomplete)
      • Brown-Séquard
    • Syndrome
      • Brown-Sequard

Clinical ClassificationClinical

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

CCSR NVS008
Paralysis (other than cerebral palsy)
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Spinal Cord Injuries

Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. A spinal cord injury disrupts the signals. Spinal cord injuries usually begin with a blow that fractures (breaks) or dislocates your vertebrae, the bone disks that make up your spine.

Read the full article at MedlinePlus

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

Convert G83.81 to ICD-9-CMHistory

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

ICD-9-CM
344.89 Oth spcf paralytic synd
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 G83.81Overview

Is G83.81 (Other specified paralytic syndromes) a billable code?

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

What is the ICD-9 equivalent of G83.81?

Under the General Equivalence Mappings, Brown-Sequard syndrome converts to ICD-9-CM 344.89 (oth spcf paralytic synd). 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.