Focal acute ischemia of intestine, part unspecified

This code signifies a localized, temporary reduction in blood flow to a segment of the intestine that is currently reversible. This ischemia is acute, meaning it has a sudden onset, and the specific part of the intestine affected is not documented. It represents a potentially salvageable condition if blood flow is restored promptly.

Use this code when documentation clearly indicates acute, focal intestinal ischemia that is considered reversible, and the specific segment of the bowel (e.g., small intestine, large intestine) is not specified. This typically applies to early stages of mesenteric ischemia where tissue damage is not yet permanent. Supporting documentation would include clinical findings consistent with acute ischemia and imaging or endoscopic reports confirming focal involvement without irreversible necrosis.

• Ensure documentation specifies "acute" and "reversible" to differentiate from chronic or irreversible ischemia.
• Do not use this code if the specific intestinal segment (e.g., small intestine, large intestine) is identified; instead, use a more specific K55.05- subcategory.
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.