G90Disorders of autonomic nervous system
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 G90 directly
Use the most specific code supported by the record.
- Chapter VI
- Diseases of the nervous system
- Group G90-G99
- Other disorders of the nervous system
- Official Vietnamese name
- Rối loạn hệ thần kinh tự động
- Additional WHO coding guidance
- Excl.: dysfunction of autonomic nervous system due to alcohol (G31.2)
Related G90 codes
G90.0
Primary diagnosis candidate
Idiopathic peripheral autonomic neuropathy
G90.1
Primary diagnosis candidate
Familial dysautonomia [Riley-Day]
G90.2
Primary diagnosis candidate
Horner syndrome
G90.4
Primary diagnosis candidate
Autonomic dysreflexia
G90.5
Primary diagnosis candidate
Complex regional pain syndrome type I
G90.6
Primary diagnosis candidate
Complex regional pain syndrome type II
G90.7
Primary diagnosis candidate
Complex regional pain syndrome, other and unspecified type
G90.8
Primary diagnosis candidate
Other disorders of autonomic nervous system
G90.9
Primary diagnosis candidate
Disorder of autonomic 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.
