Final answer:
A positive DPL is not a codeable injury, but a diagnostic tool used to identify underlying conditions like peritonitis.
Step-by-step explanation:
Peritonitis is inflammation of the peritoneum, which is the lining of the abdominal cavity. It can occur due to various causes such as bacterial infections or chemical irritation. Diagnostic peritoneal lavage (DPL) is a procedure used to assess for the presence of peritoneal bleeding or infection in cases of abdominal trauma. Therefore, a positive DPL is not a codeable injury in itself, but rather a diagnostic tool used to identify underlying conditions like peritonitis.