Focal acute infarction of intestine, part unspecified

This diagnosis code signifies a localized, acute tissue death within a segment of the intestine due to a sudden lack of blood supply. The specific part of the intestine affected is not documented or is unknown. This condition typically results from an abrupt arterial or venous occlusion.

Apply this code when documentation clearly indicates an acute, focal intestinal infarction without specifying the exact intestinal segment (e.g., small intestine, large intestine). This diagnosis is often supported by imaging studies (CT scan, angiography) showing ischemic changes or surgical findings confirming segmental necrosis.

• Ensure documentation specifies "acute" and "focal" or "segmental" infarction; otherwise, a more general or chronic code may be appropriate.
• Do not use this code if the specific intestinal segment (e.g., jejunum, ileum, colon) is identified; instead, select the more precise code from the K55.0- series.
• Code any underlying cause of the infarction (e.g., embolism, thrombosis) as an additional diagnosis, if known and documented.