G90.5Complex regional pain syndrome type I
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter VI
- Diseases of the nervous system
- Group G90-G99
- Other disorders of the nervous system
- Official Vietnamese name
- Hội chứng đau phức hợp vùng típ I
- Additional WHO coding guidance
- Sudeck atrophy Sympathetic reflex dystrophy
Related G90 codes
G90
Disorders of autonomic nervous system
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
G90.6
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.
