K57.21
ICD-10-CMDiverticulitis of large intestine with perforation and abscess with bleeding
This code signifies an acute inflammation of diverticula in the large intestine, complicated by both a perforation (a hole in the bowel wall) and an abscess (a collection of pus), in addition to active bleeding. It represents a severe form of diverticular disease requiring urgent medical or surgical intervention.
This code is appropriate for patients presenting with symptoms such as severe abdominal pain, fever, peritonitis, and signs of gastrointestinal bleeding, where imaging (e.g., CT scan) confirms diverticulitis with perforation and abscess formation, and endoscopic or surgical findings confirm active bleeding. Documentation must clearly specify the presence of all three complications: perforation, abscess, and hemorrhage.
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