K09.9Cyst of oral region, unspecified
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 XI
- Diseases of the digestive system
- Group K00-K14
- Diseases of oral cavity, salivary glands and jaws
- Official Vietnamese name
- Nang của vùng miệng, không xác định
Related K09 codes
K09
Cysts of oral region, not elsewhere classified
K09.0
Primary diagnosis candidate
Developmental odontogenic cysts
K09.1
Primary diagnosis candidate
Developmental (nonodontogenic) cysts of oral region
K09.2
Primary diagnosis candidate
Other cysts of jaw
K09.8
Primary diagnosis candidate
Other cysts of oral region, not elsewhere classified
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.
