ICD-10 Code K55 – Vascular disorders of intestine (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K55 – Vascular disorders of intestine
What it is
K55 covers disorders where the intestine does not receive normal blood flow. This can involve ischemia, infarction, or other vascular problems affecting bowel tissue.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include abdominal pain, tenderness, and signs of bowel ischemia or infarction noted on imaging or operative reports.
When to use this code
Use K55 when the provider documents a vascular disorder of the intestine, such as ischemic bowel disease or intestinal infarction. Code it when the diagnosis is confirmed or clearly established in the record. If the chart only suggests poor perfusion without a final diagnosis, check documentation.
Do not use for
Do not use K55 for nonspecific abdominal pain, gastrointestinal bleeding without a vascular diagnosis, or disorders limited to other organs. If the record names a different intestinal condition, code that condition instead.
Coding tip
Look for the provider’s final vascular diagnosis and whether the condition is acute, chronic, or unspecified.