ICD-10 Code K55.06 – Acute infarction of intestine, part unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K55.06 – Acute infarction of intestine, part unspecified
What it is
K55.06 identifies a sudden loss of blood flow causing tissue death in the intestine when the exact bowel segment is not specified. Use it when documentation confirms an acute intestinal infarction but does not name the involved part.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe acute abdominal pain, signs of bowel ischemia, or imaging and operative findings consistent with infarction of intestinal tissue.
When to use this code
Use K55.06 when the provider documents acute infarction of the intestine and does not identify the small bowel, colon, or another specific segment. It is also appropriate when the site remains unspecified after evaluation, imaging, or surgery. Code only from clear provider documentation.
Do not use for
Do not use this code for chronic mesenteric ischemia, nonspecific abdominal pain, or intestinal infarction with a documented specific bowel part. Check documentation if the record describes ischemia without confirmed infarction.
Coding tip
If the note names a specific intestinal segment, code the more precise site instead of K55.06.