ICD-10 Code K56.0 – Paralytic ileus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K56.0 – Paralytic ileus
What it is
Paralytic ileus is a temporary loss of normal bowel movement without a physical blockage. It means the intestines are not pushing contents forward as they should.
Clinical signs
Typical findings include abdominal distension, reduced or absent bowel sounds, nausea, vomiting, and delayed passage of stool or flatus. Clinical features vary; refer to documentation.
When to use this code
Use K56.0 when the provider documents ileus, adynamic ileus, or paralytic ileus as the diagnosis. It is appropriate when the bowel is not functioning due to decreased motility rather than an obstruction. Check documentation if the note mentions postoperative ileus or another specific cause.
Do not use for
Do not use this code for mechanical intestinal obstruction or when the record supports constipation alone. If the bowel problem is described differently, code the documented condition instead.
Coding tip
Look for the exact wording “paralytic ileus” and confirm whether the cause or postoperative status needs additional coding.