2022 ICD-10-CM Code G31.8

Other specified degenerative diseases of nervous system

Version 2021

Not Valid for Submission

ICD-10:G31.8
Short Description:Other specified degenerative diseases of nervous system
Long Description:Other specified degenerative diseases of nervous system

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Other degenerative diseases of the nervous system (G30-G32)
      • Oth degenerative diseases of nervous system, NEC (G31)

G31.8 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other specified degenerative diseases of nervous system. The code is not specific and is NOT valid for the year 2022 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.

Specific Coding for Other specified degenerative diseases of nervous system

Non-specific codes like G31.8 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 other specified degenerative diseases of nervous system:

  • BILLABLE CODE - Use G31.81 for Alpers disease
  • BILLABLE CODE - Use G31.82 for Leigh's disease
  • BILLABLE CODE - Use G31.83 for Dementia with Lewy bodies
  • BILLABLE CODE - Use G31.84 for Mild cognitive impairment, so stated
  • BILLABLE CODE - Use G31.85 for Corticobasal degeneration
  • BILLABLE CODE - Use G31.89 for Other specified degenerative diseases of nervous system

Information for Patients


Degenerative Nerve Diseases

Degenerative nerve diseases affect many of your body's activities, such as balance, movement, talking, breathing, and heart function. Many of these diseases are genetic. Sometimes the cause is a medical condition such as alcoholism, a tumor, or a stroke. Other causes may include toxins, chemicals, and viruses. Sometimes the cause is unknown.

Degenerative nerve diseases include

Degenerative nerve diseases can be serious or life-threatening. It depends on the type. Most of them have no cure. Treatments may help improve symptoms, relieve pain, and increase mobility.


[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)