K91Postprocedural disorders of digestive 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 K91 directly
Use the most specific code supported by the record.
- Chapter XI
- Diseases of the digestive system
- Group K90-K93
- Other diseases of the digestive system
- Official Vietnamese name
- Rối loạn của hệ tiêu hóa sau can thiệp, không phân loại mục khác
- Additional WHO coding guidance
- Excl.: gastrojejunal ulcer (K28.-) radiation: colitis (K52.0) gastroenteritis (K52.0) proctitis (K62.7)
Related K91 codes
K91.0
Primary diagnosis candidate
Vomiting following gastrointestinal surgery
K91.1
Primary diagnosis candidate
Postgastric surgery syndromes
K91.2
Primary diagnosis candidate
Postsurgical malabsorption, not elsewhere classified
K91.3
Primary diagnosis candidate
Postoperative intestinal obstruction
K91.4
Primary diagnosis candidate
Colostomy and enterostomy malfunction
K91.5
Primary diagnosis candidate
Postcholecystectom y syndrome
K91.8
Primary diagnosis candidate
Other postprocedural disorders of digestive system, not elsewhere classified
K91.9
Primary diagnosis candidate
Postprocedural disorder of digestive 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.
