K66 - Other disorders of peritoneum
Excludes 2:
-ascites (R18.-)
-peritoneal effusion (chronic) R18.8)
K66.0 - Peritoneal adhesions (postprocedural) (postinfection)
K66.1 - Hemoperitoneum
K66.8 - Other specified disorders of peritoneum
K66.9 - Disorder of peritoneum, unspecified