1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G30-G32 Other degenerative diseases of the nervous system
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4. G31- Other degenerative diseases of nervous system, not elsewhere classified
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2020 ICD-10-CM Diagnosis Code G31.0

Frontotemporal dementia

2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code

• G31.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2020 edition of ICD-10-CM G31.0 became effective on October 1, 2019.
• This is the American ICD-10-CM version of G31.0 - other international versions of ICD-10 G31.0 may differ.

• A syndrome caused by progressive degeneration of the frontal or temporal lobes of the brain. It is manifested with personality changes and deterioration of the language skills.
• The most common clinical form of frontotemporal lobar degeneration, this dementia presents with personality and behavioral changes often associated with disinhibition, apathy, and lack of insight.

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change

• Use Additional: G31
  ICD-10-CM Diagnosis Code G31

  Other degenerative diseases of nervous system, not elsewhere classified

  2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code

  Type 2 Excludes

  • Reye's syndrome (G93.7)

  Use Additional

  • For codes G31.0-G31.83, G31.85-G31.9, use additional code to identify:
  • dementia with behavioral disturbance (F02.81)
  • dementia without behavioral disturbance (F02.80)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.