In simple words: A severe infection causing inflammation of the lining of the abdomen and pelvic organs in women.

Acute inflammation of the peritoneum within the female pelvis.

Example 1: A 30-year-old woman presents with severe lower abdominal pain, fever, and vaginal discharge. A pelvic exam reveals tenderness and inflammation.After laboratory testing confirms an infection, she is diagnosed with acute pelvic peritonitis (N73.3) and started on intravenous antibiotics., A 25-year-old woman undergoes an appendectomy.Post-operatively, she develops fever, abdominal pain, and distension. Imaging studies reveal fluid and inflammation in the pelvis. She is diagnosed with acute pelvic peritonitis (N73.3) as a post-surgical complication., A 40-year-old woman with a history of pelvic inflammatory disease experiences a sudden worsening of pelvic pain and develops a high fever.A CT scan shows an abscess in the pelvis.She is diagnosed with acute pelvic peritonitis (N73.3) secondary to the ruptured abscess and requires surgical drainage and antibiotic treatment.

Documentation should include details of the patient's presenting symptoms (e.g., pain, fever, discharge), findings from the pelvic exam, results of laboratory tests and imaging studies, and the physician's clinical assessment confirming the diagnosis of acute pelvic peritonitis. Information about the suspected cause of the infection (if known) and treatment plan should also be documented.