K63 - Other diseases of intestine
K63.2 - Fistula of intestine
Excludes 1:
-fistula of duodenum K31.6)
-fistula of intestine with Crohn's disease K50.013,K50.113,K50.813,K50.913,)
-fistula of intestine with ulcerative colitis K51.013,K51.213,K51.313,K51.413,K51.513,K51.813,K51.913)
Excludes 2:
-fistula of anal and rectal regions (K60.-)
-fistula of appendix K38.3)
-intestinal-genital fistula, female N82.2-N82.4)
-vesicointestinal fistula N32.1)