Perforation of intestine (nontraumatic)

**Inclusion terms:** - Perforation (nontraumatic) of rectum

**Excludes1:** - perforation (nontraumatic) of duodenum (K26.-) - perforation (nontraumatic) of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)

**Excludes2:** - perforation (nontraumatic) of appendix (K35.2-, K35.3-)