Abdominal actinomycosis

This code signifies a chronic, suppurative bacterial infection caused by Actinomyces species, specifically affecting the abdominal cavity. It is characterized by abscess formation, tissue fibrosis, and the development of draining sinuses, often involving the bowel, mesentery, and peritoneum.

Apply this code when documentation confirms a diagnosis of actinomycosis localized to the abdomen. This typically includes findings from imaging (e.g., CT scan showing an abdominal mass or abscess), biopsy confirming Actinomyces organisms, or clinical presentation consistent with abdominal actinomycosis.

• Ensure documentation specifies the abdominal location; otherwise, consider codes for actinomycosis of other sites (e.g., thoracic, cervicofacial).
• Do not confuse with Nocardiosis, which is caused by a different genus of bacteria and has distinct coding.
• Code any associated complications, such as peritonitis or fistula formation, separately if documented.