K56Paralytic ileus and intestinal obstruction without hernia

K56 is the ICD-10-CM diagnosis code for paralytic ileus and intestinal obstruction without hernia. It belongs to block K55-K64 (other diseases of intestines) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: K56.0 (ileus), K56.1 (intussusception), K56.2 (Volvulus), K56.3 (ileus), K56.4 (intestine), K56.5 ((postinfection)), K56.6 (obstruction) and K56.7 (unspecified).

Don't report K56 together with the conditions in its Excludes1 note: congenital stricture or stenosis of intestine (Q41-Q42), cystic fibrosis with meconium ileus (E84.11), ischemic stricture of intestine (K55.1), meconium ileus NOS (P76.0) and 3 more.

The conditions in its Excludes2 note aren't part of K56, but may be coded alongside it if the patient has both: stenosis of anus or rectum (K62.4).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.