ICD-10 Code K55.052 – Diffuse acute (reversible) ischemia of intestine, part unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K55.052 – Diffuse acute (reversible) ischemia of intestine, part unspecified
What it is
This code identifies a diffuse, acute episode of reduced blood flow to the intestine that is described as reversible and not tied to a specified bowel segment. Use it when the record clearly supports intestinal ischemia but does not name the exact part involved.
Clinical signs
Typical documentation may note sudden abdominal pain, tenderness, or other signs of bowel hypoperfusion. Clinical features vary; refer to documentation, and confirm that the provider describes the process as acute, diffuse, and reversible.
When to use this code
Use K55.052 when the clinician documents diffuse acute reversible intestinal ischemia and does not identify a more specific bowel location. It may also fit when imaging, operative findings, or specialist notes support ischemia but the affected segment remains unspecified. You should code the documented diagnosis, not infer the site.
Do not use for
Do not use this code for chronic intestinal ischemia, infarction, or ischemia limited to a clearly named bowel segment. If the record says mesenteric ischemia or another condition without confirming this exact diagnosis, check documentation.
Coding tip
Verify that “reversible” and “part unspecified” are supported in the note before assigning K55.052.