Diffuse acute infarction of large intestine

This code signifies widespread, sudden tissue death in the large intestine due to a severe lack of blood supply. This ischemic event affects a significant portion of the colon, leading to acute cellular injury and necrosis.

Apply this code when documentation clearly indicates an acute, diffuse infarction affecting the large intestine, often presenting with severe abdominal pain, bloody stools, and signs of peritonitis. Supporting documentation typically includes imaging reports (e.g., CT angiography showing extensive vascular occlusion) and endoscopic findings confirming widespread ischemic changes.

• Differentiate from focal or segmental infarction; this code specifically denotes diffuse involvement.
• Ensure the documentation specifies "acute" to distinguish from chronic ischemic colitis.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, followed by any underlying causes like mesenteric artery embolism.