1. K56 Paralytic ileus and intestinal obstruction without hernia

    1. K56.0 Paralytic ileus

      Inclusion term(s):

      • Paralysis of bowel
      • Paralysis of colon
      • Paralysis of intestine
    2. K56.1 Intussusception

      Inclusion term(s):

      • Intussusception or invagination of bowel
      • Intussusception or invagination of colon
      • Intussusception or invagination of intestine
      • Intussusception or invagination of rectum
    3. K56.2 Volvulus

      Inclusion term(s):

      • Strangulation of colon or intestine
      • Torsion of colon or intestine
      • Twist of colon or intestine
    4. K56.3 Gallstone ileus

      Inclusion term(s):

      • Obstruction of intestine by gallstone
    5. K56.4 Other impaction of intestine

      1. K56.41 Fecal impaction

      2. K56.49 Other impaction of intestine

    6. K56.5 Intestinal adhesions [bands] with obstruction (postinfection)

      Inclusion term(s):

      • Abdominal hernia due to adhesions with obstruction
      • Peritoneal adhesions [bands] with intestinal obstruction (postinfection)
      1. K56.50 Intestinal adhesions [bands], unspecified as to partial versus complete obstruction

        Inclusion term(s):

        • Intestinal adhesions with obstruction NOS
      2. K56.51 Intestinal adhesions [bands], with partial obstruction

        Inclusion term(s):

        • Intestinal adhesions with incomplete obstruction
      3. K56.52 Intestinal adhesions [bands] with complete obstruction

    7. K56.6 Other and unspecified intestinal obstruction

      1. K56.60 Unspecified intestinal obstruction

        • K56.600 Partial intestinal obstruction, unspecified as to cause

          Inclusion term(s):

          • Incomplete intestinal obstruction, NOS
        • K56.601 Complete intestinal obstruction, unspecified as to cause
        • K56.609 Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction

          Inclusion term(s):

          • Intestinal obstruction NOS
      2. K56.69 Other intestinal obstruction

        Inclusion term(s):

        • Enterostenosis NOS
        • Obstructive ileus NOS
        • Occlusion of colon or intestine NOS
        • Stenosis of colon or intestine NOS
        • Stricture of colon or intestine NOS
        • K56.690 Other partial intestinal obstruction

          Inclusion term(s):

          • Other incomplete intestinal obstruction
        • K56.691 Other complete intestinal obstruction
        • K56.699 Other intestinal obstruction unspecified as to partial versus complete obstruction

          Inclusion term(s):

          • Other intestinal obstruction, NEC
    8. K56.7 Ileus, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.