K27Peptic ulcer, site unspecified
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 K27 directly
Use the most specific code supported by the record.
- Chapter XI
- Diseases of the digestive system
- Group K20-K31
- Diseases of oesophagus, stomach and duodenum
- Official Vietnamese name
- Loét dạ dày - tá tràng, vị trí không xác định
- Additional WHO coding guidance
- [See at the beginning of this block for subdivisions] Incl.: gastroduodenal ulcer NOS peptic ulcer NOS Excl.: peptic ulcer of newborn (P78.8)
Related K27 codes
K27.0
Primary diagnosis candidate
Peptic ulcer, site unspecified, acute with haemorrhage
K27.1
Primary diagnosis candidate
Peptic ulcer, site unspecified, acute with perforation
K27.3
Primary diagnosis candidate
Peptic ulcer, site unspecified, acute without haemorrhage or perforation
K27.4
Primary diagnosis candidate
Peptic ulcer, site unspecified, chronic or unspecified with haemorrhage
K27.5
Primary diagnosis candidate
Peptic ulcer, site unspecified, chronic or unspecified with perforation
K27.6
Primary diagnosis candidate
Peptic ulcer, site unspecified, chronic or unspecified with both haemorrhage and perforation
K27.7
Primary diagnosis candidate
Peptic ulcer, site unspecified, chronic without haemorrhage or perforation
K27.9
Primary diagnosis candidate
Peptic ulcer, unspecified as acute or chronic, without haemorrhage or perforation
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.
