Tuberculous peritonitis

This code signifies inflammation of the peritoneum, the membrane lining the abdominal cavity, caused by Mycobacterium tuberculosis infection. It represents a form of extrapulmonary tuberculosis affecting the abdominal organs.

Use this code when documentation confirms a diagnosis of peritonitis specifically attributed to tuberculosis. This diagnosis is typically supported by positive cultures for M. tuberculosis from peritoneal fluid or biopsy, or histological evidence of granulomas with caseous necrosis.

• Always confirm the infectious agent is Mycobacterium tuberculosis; other forms of peritonitis have different codes.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.
• Look for documentation of associated conditions, such as ascites or abdominal pain, which may require additional codes.