2026 ICD-10-CM Diagnosis Code G62.89Other specified polyneuropathies

ICD-10-CM Codes›G00–G99›G60-G65›G62

ICD-10-CM G62.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G62.89 is a billable ICD-10-CM diagnosis code for other specified polyneuropathies. 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 Polyneuropathies.

Code Identity

ICD-10-CM Code
G62.89
Billable Status
Yes — Valid for Submission
Code Describes
Other specified polyneuropathies
Short Description
Other specified polyneuropathies
Same as the full description in the CMS dataset.
Parent Code
G62.8
Other specified polyneuropathies

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG60-G65Polyneuropathies and other disorders of the peripheral nervous system
CategoryG62Other and unspecified polyneuropathies
This CodeG62.89Other specified polyneuropathies

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anoxic neuropathy
  • Autoimmune peripheral motor neuropathy
  • Autoimmune sensorimotor neuropathy
  • Autoimmune sensory neuropathy
  • Axonal neuropathy
  • Axonal sensorimotor neuropathy
  • Dying back phenomenon
  • Idiopathic chronic neuropathy
  • Inflammatory neuropathy
  • Inflammatory neuropathy due to and following vaccination
  • Length-dependent peripheral neuropathy
  • Mixed sensory-motor polyneuropathy
  • Motor polyneuropathy
  • Neurological complication following vaccination
  • Neuropathy due to infection
  • Nutritional ataxic neuropathy
  • Occult neuropathy
  • Periodic paralysis
  • Periodic paralysis with later-onset distal motor neuropathy
  • Peripheral axonal neuropathy
  • Peripheral demyelinating neuropathy
  • Peripheral motor neuropathy
  • Sensory neuropathy
  • Sensory polyneuropathy
  • Small fiber neuropathy
  • Toxic polyneuropathy
  • Tropical ataxic neuropathy

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.

    • Neuropathy, neuropathic
      • chronic
        • progressive segmentally demyelinating
    • Neuropathy, neuropathic
      • chronic
        • relapsing demyelinating
    • Polyneuritis, polyneuritic
      • specified NEC
    • Polyneuropathy(peripheral)
      • specified NEC

Clinical ClassificationClinical

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

CCSR NVS015
Polyneuropathies
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Small Fiber Neuropathy

    disorder of the peripheral nerves that primarily impair small nerve fibers. the affected small nerve fibers include myelinated a-delta fibers (see a fibers) and unmyelinated c fibers. because these small fibers innervate skin and help control autonomic function, their neuropathy presents with neuropathic pain, reduced thermal and pain sensitivity, and autonomic dysfunction (e.g. abnormal sweating or facial flushing). small fiber neuropathy can be idiopathic or associated with underlying diseases (e.g., amyloidosis; diabetes mellitus; sarcoidosis; or vasculitis).

  • Chronic Toxic Polyneuropathy

    neuropathy affecting multiple nerves that is caused by prolonged exposure to toxic substances.

  • Toxic Polyneuropathy

    polyneuropathy that is caused by exposure to toxins.

  • Acute Motor and Sensory Axonal Neuropathy|Acute Motor And Sensory Axonal Neuropathy|Acute Motor-Sensory Axonal Neuropathy|Acute Motor-Sensory Axonal Neuropathy

    a subtype of guillain-barre syndrome that targets sensory motor axons, and is characterized by acute onset of quadriparesis, distal sensory loss, areflexia, and respiratory insufficiency.

  • Acute Motor Axonal Neuropathy|AMAN

    a subtype of guillain-barre syndrome that targets motor axons, and is characterized by symmetric limb weakness, diffuse areflexia, facial and oropharyngeal muscle weakness, and respiratory insufficiency.

  • Axonal Neuropathy

    any nerve disorder affecting the axon of a nerve.

  • GAN wt Allele|GAN1|Giant Axonal Neuropathy (Gigaxonin) Gene|Gigaxonin wt Allele|KLHL16

    human gan wild-type allele is located in the vicinity of 16q24.1 and is approximately 65 kb in length. this allele, which encodes gigaxonin protein, is involved in both ubiquitination and neurofilament structure. mutation of the gene is associated with giant axonal neuropathy.

  • Giant Axonal Neuropathy

    a rare inherited disorder affecting the neurofilaments. it is caused by mutations in the gan gene. it is characterized by the presence of abnormally large nerve cell axons. signs and symptoms include difficulty walking, sensory disturbances, lack of motor coordination and abnormal reflexes in the limbs.

  • Spinocerebellar Ataxia, Autosomal Recessive, with Axonal Neuropathy 2|AOA2|Ataxia with Oculomotor Apraxia Type 2|SCAN2

    an autosomal recessive condition caused by mutation(s) in the setx gene, encoding probable helicase senataxin. it is characterized by juvenile onset progressive cerebellar ataxia, axonal sensorimotor peripheral neuropathy, and increased concentrations of serum alpha-fetoprotein. oculomotor apraxia is common, but is not always present.

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 G62.89 to ICD-9-CMHistory

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

ICD-9-CM
357.89 Inflam/tox neuropthy NEC
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 G62.89Overview

Is G62.89 (Other specified polyneuropathies) a billable code?

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

What is the ICD-9 equivalent of G62.89?

Under the General Equivalence Mappings, other specified polyneuropathies converts to ICD-9-CM 357.89 (inflam/tox neuropthy NEC). 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.