K59.3 is the ICD-10 code for Megacolon, not elsewhere classified. It is a four-character subcategory of K59 (Other functional intestinal disorders), the most specific level in the WHO edition. It belongs to the block K55–K64 (Other diseases of intestines) in Chapter XI, Diseases of the digestive system.
- Code type
- Subcategory (4 characters)
- Chapter
- XI · K00–K93
- Classification
- WHO ICD-10, 2019 version
What K59.3 includes
Conditions and terms that are coded here.
- Dilatation of colon
- Toxic megacolon
What K59.3 excludes
Conditions that look similar but belong under another code.
Coding notes
- Use additional external cause code (Chapter XX), if desired, to identify toxic agent.
K59.3 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
K59.3Megacolon ikke klassifisert annet sted
DK593Megacolon IKA
- DK593BDilatatio coli
- DK593CToksisk megacolon IKA
- DK593DToksisk megasigmoideum IKA
K59.3Muualla luokittamaton megakoolon
K59.3Megakolon, anderenorts nicht klassifiziert
K59.3Mégacôlon, non classé ailleurs
K59.3megacolon, niet elders geclassificeerd
Listed through more specific codes:
- K59.31Toxic megacolon
- K59.39Other megacolon
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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