K59Other functional intestinal disorders
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 K59 directly
Use the most specific code supported by the record.
- Chapter XI
- Diseases of the digestive system
- Group K55-K64
- Other diseases of intestines
- Official Vietnamese name
- Rối loạn chức năng khác của ruột
- Additional WHO coding guidance
- Excl.: change in bowel habit NOS (R19.4) functional disorders of stomach (K31.-) intestinal malabsorption (K90.-) psychogenic intestinal disorders (F45.3)
Related K59 codes
K59.0
Primary diagnosis candidate
Constipation
K59.1
Primary diagnosis candidate
Functional diarrhoea
K59.2
Primary diagnosis candidate
Neurogenic bowel, not elsewhere classified
K59.3
Primary diagnosis candidate
Megacolon, not elsewhere classified
K59.4
Primary diagnosis candidate
Anal spasm
K59.8
Primary diagnosis candidate
Other specified functional intestinal disorders
K59.9
Primary diagnosis candidate
Functional intestinal disorder, 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.
