Diffuse acute ischemia of intestine, part unspecified

This code signifies a widespread, acute reduction in blood flow to the intestines that is potentially reversible. This ischemia affects the entire intestinal tract or a significant portion thereof, without specifying a particular segment. It indicates a sudden onset of insufficient oxygen supply to the bowel tissue.

Apply this code when documentation clearly indicates diffuse, acute intestinal ischemia without specifying the affected segment (e.g., small bowel, large bowel). This is appropriate for conditions like non-occlusive mesenteric ischemia affecting multiple intestinal regions. Supporting documentation should describe the acute nature and widespread involvement of the bowel.

• Differentiate from localized ischemia (e.g., K55.01- for acute vascular disorders of small intestine) or chronic ischemia (K55.1).
• Ensure documentation specifies "diffuse" or "widespread" involvement of the intestine, and that the acute nature is evident.
• Do not use if a specific part of the intestine (e.g., small intestine, large intestine) is identified as the primary site of ischemia.