Small Bowel Obstruction ICD-10-CM codes
ICD-10-CM codes for small bowel obstruction (SBO) and ileus, including partial and complete obstruction, adhesive obstruction, fecal impaction, and postoperative obstruction.
29 codes, 22 billable. FY2027, valid from October 1, 2026. In chapter 11: Diseases of the Digestive System.
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How to code Small Bowel Obstruction
ICD-10-CM does not separate small from large bowel obstruction. Obstruction with no stated cause is K56.60-: K56.600 partial, K56.601 complete, and K56.609 unspecified as to partial or complete. Other specified obstruction is K56.69- with the same partial, complete, and unspecified split.
Obstruction due to adhesions is K56.5-: K56.50 unspecified, K56.51 partial, and K56.52 complete. Paralytic ileus is K56.0, ileus not otherwise specified is K56.7, intussusception is K56.1, volvulus is K56.2, gallstone ileus is K56.3, and fecal impaction is K56.41.
Obstruction caused by a hernia is coded to the hernia with obstruction, for example K40.30 for an inguinal hernia or K43.0 for an incisional hernia, not to K56. Postprocedural obstruction is K91.3- (K91.30, K91.31, K91.32). Obstruction from a tumor is coded to the neoplasm, such as C78.4 for metastasis to the small intestine.
All Small Bowel Obstruction codes
- C78.4Secondary malignant neoplasm of small intestine
- K40.30Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent
- K43.0Incisional hernia with obstruction, without gangrene
- K56Paralytic ileus and intestinal obstruction without hernia
- K56.0Paralytic ileus
- K56.1Intussusception
- K56.2Volvulus
- K56.3Gallstone ileus
- K56.4Other impaction of intestine
- K56.41Fecal impaction
- K56.49Other impaction of intestine
- K56.5Intestinal adhesions [bands] with obstruction (postinfection)
- K56.50Intestinal adhesions [bands], unspecified as to partial versus complete obstruction
- K56.51Intestinal adhesions [bands], with partial obstruction
- K56.52Intestinal adhesions [bands] with complete obstruction
- K56.6Other and unspecified intestinal obstruction
- K56.60Unspecified intestinal obstruction
- K56.600Partial intestinal obstruction, unspecified as to cause
- K56.601Complete intestinal obstruction, unspecified as to cause
- K56.609Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction
- K56.69Other intestinal obstruction
- K56.690Other partial intestinal obstruction
- K56.691Other complete intestinal obstruction
- K56.699Other intestinal obstruction unspecified as to partial versus complete obstruction
- K56.7Ileus, unspecified
- K91.3Postprocedural intestinal obstruction
- K91.30Postprocedural intestinal obstruction, unspecified as to partial versus complete
- K91.31Postprocedural partial intestinal obstruction
- K91.32Postprocedural complete intestinal obstruction
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