K59.3
Megacolon, not elsewhere classified
Coding guidance (WHO 2019)
Dilatation of colon Toxic megacolon Use additional external cause code (Chapter XX), if desired, to identify toxic agent. Excl.: megacolon (due to) (in): Chagas disease (B57.3) Clostridium difficile (A04.7) congenital (aganglionic) (Q43.1) Hirschsprung disease (Q43.1)