G31Other degenerative diseases of nervous system, not elsewhere classified
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use G31 directly
Use the most specific code supported by the record.
- Chapter VI
- Diseases of the nervous system
- Group G30-G32
- Other degenerative diseases of the nervous system
- Official Vietnamese name
- Bệnh thoái hóa khác của hệ thần kinh, không phân loại mục khác
- Additional WHO coding guidance
- Excl.: Reye syndrome (G93.7)
Related G31 codes
G31.0
Primary diagnosis candidate
Circumscribed brain atrophy
G31.1
Primary diagnosis candidate
Senile degeneration of brain, not elsewhere classified
G31.2
Primary diagnosis candidate
Degeneration of nervous system due to alcohol
G31.8
Primary diagnosis candidate
Other specified degenerative diseases of nervous system
G31.9
Primary diagnosis candidate
Degenerative disease of nervous system, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
