2026 ICD-10-CM Diagnosis Code G83.4Cauda equina syndrome

ICD-10-CM Codes›G00–G99›G80-G83›G83

ICD-10-CM G83.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G83.4 is a billable ICD-10-CM diagnosis code for cauda equina 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
G83.4
Billable Status
Yes — Valid for Submission
Code Describes
Cauda equina syndrome
Short Description
Cauda equina syndrome
Same as the full description in the CMS dataset.
Parent Code
G83
Other paralytic syndromes

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG80-G83Cerebral palsy and other paralytic syndromes
CategoryG83Other paralytic syndromes
This CodeG83.4Cauda equina syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cauda equina compression due to inflammatory disorder
  • Cauda equina compression due to spinal injury
  • Cauda equina syndrome
  • Cauda equina syndrome due to infection
  • Cauda equina syndrome due to spinal stenosis
  • Cauda equina syndrome due to vascular disorder
  • Cauda equina syndrome not affecting bladder
  • Cauda equina syndrome with cord bladder
  • Cauda equina syndrome with neurogenic urinary bladder
  • Cauda equina syndrome with painless urinary retention
  • Cauda equina syndrome without neurogenic bladder
  • Compression of cauda equina
  • Compression of cauda equina due to lumbar vertebral stenosis
  • Incomplete cauda equina syndrome
  • Lumbar disc prolapse with cauda equina compression
  • Peripheral neuropathy due to inflammation
  • Post-procedural cauda equina syndrome
  • Retention of urine
  • Stenosis of lumbar vertebral foramen
  • Stenosis of vertebral foramen

Tabular List NotesGuidance

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

Inclusion Terms

  • Neurogenic bladder due to cauda equina syndrome

Type 1 Excludes

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.

    • Compression
      • cauda equina
    • Lesion(s) (nontraumatic)
      • cauda equina
    • Neurogenic
      • bladder
        • cauda equina syndrome
    • Syndrome
      • cauda equina
    • Syndrome
      • compression
        • cauda equina

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

Clinical InformationClinical

  • Cauda Equina Syndrome

    compressive lesion affecting the nerve roots of the cauda equina (e.g., compression, herniation, inflammation, rupture, or stenosis), which controls the function of the bladder and bowel. symptoms may include neurological dysfunction of bladder or bowels, loss of sexual sensation and altered sensation or paralysis in the lower extremities.

  • Cauda Equina

    the lower part of the spinal cord consisting of the lumbar, sacral, and coccygeal nerve roots.

  • Cauda Equina Syndrome with Neurogenic Bladder

    a rare neurologic disorder caused by impingement of the nerve roots of the cauda equina secondary to disc herniation, spinal stenosis, vertebral fracture, neoplasm or infection. clinical signs may include bladder or bowel dysfunction, paresthesia and weakness of the lower extremities. the development of neurogenic bladder implies that surgical decompression was either ineffective, delayed or not attempted.

Patient EducationClinical

Peripheral Nerve Disorders

Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs.

The full article covers:

  • What are peripheral nerves?
  • What are peripheral nerve disorders?
  • What causes peripheral nerve disorders?
  • What are the symptoms of peripheral nerve disorders?
  • How are peripheral nerve disorders diagnosed?
  • What are the treatments for peripheral nerve disorders?
  • Can peripheral nerve disorders be prevented?

Read the full article at MedlinePlus

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

Convert G83.4 to ICD-9-CMHistory

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

ICD-9-CM
344.60 Cauda equina synd NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
344.61 Neurogenic bladder
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 G83.4Overview

Is G83.4 (Other paralytic syndromes) a billable code?

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

What is the ICD-9 equivalent of G83.4?

Under the General Equivalence Mappings, cauda equina syndrome converts to ICD-9-CM 344.60 (cauda equina synd NOS) and 344.61 (neurogenic bladder). 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.