2026 ICD-10-CM Diagnosis Code G65.0Sequelae of Guillain-Barre syndrome

ICD-10-CM Codes›G00–G99›G60-G65›G65

ICD-10-CM G65.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G65.0 is a billable ICD-10-CM diagnosis code for sequelae of Guillain-Barre syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as ophthalmoplegia due to and following Guillain-Barré syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sequela of specified nervous system conditions.

Code Identity

ICD-10-CM Code
G65.0
Billable Status
Yes — Valid for Submission
Code Describes
Sequelae of Guillain-Barre syndrome
Short Description
Sequelae of Guillain-Barre syndrome
Same as the full description in the CMS dataset.
Parent Code
G65
Sequelae of inflammatory and toxic polyneuropathies

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG60-G65Polyneuropathies and other disorders of the peripheral nervous system
CategoryG65Sequelae of inflammatory and toxic polyneuropathies
This CodeG65.0Sequelae of Guillain-Barre syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ophthalmoplegia due to and following Guillain-Barré syndrome
  • Ophthalmoplegia due to neuropathy
  • Sequela of Guillain Barre syndrome

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.

    • Guillain-Barré disease or syndrome
      • sequelae

Clinical ClassificationClinical

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

CCSR NVS022
Sequela of specified nervous system conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Guillain-Barre Syndrome

Guillain-Barre syndrome is a rare disorder that causes your immune system to attack your peripheral nervous system (PNS). The PNS nerves connect your brain and spinal cord with the rest of your body. Damage to these nerves makes it hard for them to transmit signals. As a result, your muscles have trouble responding to your brain.

Read the full article at MedlinePlus

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

Convert G65.0 to ICD-9-CMHistory

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

ICD-9-CM
357.4 Neuropathy in other dis
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 G65.0Overview

Is G65.0 (Sequelae of inflammatory and toxic polyneuropathies) a billable code?

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

What is the ICD-9 equivalent of G65.0?

Under the General Equivalence Mappings, sequelae of Guillain-Barre syndrome converts to ICD-9-CM 357.4 (neuropathy in other dis). 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.