2021 ICD-10-CM Code G65

Sequelae of inflammatory and toxic polyneuropathies

  1. ICD-10-CM Index
  2. Chapter: G00–G99
  3. Section: G60-G65
  4. Block: G65
  5. G65 - Sequelae of inflammatory and toxic polyneuropathies
Version 2021
Non-Billable Code
Sequela Code

Not Valid for Submission

ICD-10:G65
Short Description:Sequelae of inflammatory and toxic polyneuropathies
Long Description:Sequelae of inflammatory and toxic polyneuropathies

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Polyneuropathies and other disorders of the peripheral nervous system (G60-G65)
      • Sequelae of inflammatory and toxic polyneuropathies (G65)

G65 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of sequelae of inflammatory and toxic polyneuropathies. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

G65 is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like e of inflammatory and toxic polyneuropathies. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.

Specific Coding for Sequelae of inflammatory and toxic polyneuropathies

Non-specific codes like G65 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for sequelae of inflammatory and toxic polyneuropathies:

  • BILLABLE CODE - Use G65.0 for Sequelae of Guillain-Barre syndrome
  • BILLABLE CODE - Use G65.1 for Sequelae of other inflammatory polyneuropathy
  • BILLABLE CODE - Use G65.2 for Sequelae of toxic polyneuropathy

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G65:


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Information for Patients


Peripheral Nerve Disorders

Also called: Neuritis, Peripheral neuritis, Peripheral neuropathy

Your peripheral nerves are the ones outside your brain and spinal cord. Like static on a telephone line, peripheral nerve disorders distort or interrupt the messages between the brain and the rest of the body.

There are more than 100 kinds of peripheral nerve disorders. They can affect one nerve or many nerves. Some are the result of other diseases, like diabetic nerve problems. Others, like Guillain-Barre syndrome, happen after a virus infection. Still others are from nerve compression, like carpal tunnel syndrome or thoracic outlet syndrome. In some cases, like complex regional pain syndrome and brachial plexus injuries, the problem begins after an injury. Some people are born with peripheral nerve disorders.

Symptoms often start gradually, and then get worse. They include

Treatment aims to treat any underlying problem, reduce pain and control symptoms.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)

Previous Code: G64

Related Codes

Next Code: G65.0