G31.09 OTHER FRONTOTEMPORAL NEUROCOGNITIVE DISORDER

Code Information

  • Diagnosis Code: G31.09
  • Short Description: Other frontotemporal neurocognitive disorder
  • Long Description: Other frontotemporal neurocognitive disorder
  • Code Version: 2025 ICD-10-CM

The code G31.09 is VALID for claim submission

Code Classification

Synonyms

  • Amyotrophic lateral sclerosis plus syndrome
  • Amyotrophic lateral sclerosis with frontotemporal dementia
  • Behavioral variant of frontotemporal dementia
  • CHMP2B-related frontotemporal dementia
  • Dementia due to chromosomal anomaly
  • Dementia due to chromosomal anomaly
  • Dementia due to chromosomal anomaly
  • Dementia due to chromosomal anomaly
  • Dementia of frontal lobe type
  • Familial multiple system tauopathy
  • Frontal lobe degeneration
  • Frontotemporal dementia
  • Frontotemporal dementia due to C9orf72 mutation
  • Frontotemporal dementia due to FUS mutation
  • Frontotemporal dementia due to TARDBP mutation
  • Frontotemporal dementia due to VCP mutation
  • Frontotemporal dementia with parkinsonism-17
  • Frontotemporal dementia with parkinsonism-17
  • GRN-related frontotemporal dementia
  • Inclusion body myopathy with early-onset Paget disease and frontotemporal dementia
  • Myopathy with cytoplasmic inclusions
  • Right temporal lobar atrophy
  • Semantic dementia

References to Index of Diseases and Injuries

The code G31.09 has the following ICD-10-CM references to the Index of Diseases and Injuries

  • Inclusion Terms:
    • Frontal dementia

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
G31.09 Right Arrow 331.19 Frontotemp dementia NEC
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
G31 Other degenerative diseases of nervous system, not elsewhere classified
G31.0 Frontotemporal dementia
G31.01 Pick's disease
G31.1 Senile degeneration of brain, not elsewhere classified
G31.2 Degeneration of nervous system due to alcohol
G31.8 Other specified degenerative diseases of nervous system
G31.80 Leukodystrophy, unspecified
G31.81 Alpers disease
G31.82 Leigh's disease
G31.83 Neurocognitive disorder with Lewy bodies
G31.84 Mild cognitive impairment of uncertain or unknown etiology
G31.85 Corticobasal degeneration
G31.86 Alexander disease
G31.87 Primary progressive apraxia of speech
G31.89 Other specified degenerative diseases of nervous system
G31.9 Degenerative disease of nervous system, unspecified
This page was last updated on: 10/1/2025
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