In simple words: This code describes inflammation of the lining of the abdomen in the pelvic area in women, but the exact cause and location aren't known.

This code classifies unspecified female pelvic peritonitis.Pelvic peritonitis is inflammation of the peritoneum, the membrane lining the abdominal cavity, specifically in the female pelvic region.The unspecified nature indicates that the underlying cause and specific location of the inflammation are not specified. Additional codes (B95-B97) may be used to identify the infectious agent if known.

Example 1: A 25-year-old female presents with lower abdominal pain, fever, and vaginal discharge. Pelvic exam reveals tenderness and purulent cervical discharge.Diagnosis of pelvic inflammatory disease (PID) with peritonitis is made.N73.5 is coded., A 30-year-old female underwent a laparoscopic salpingectomy (removal of a fallopian tube) due to ectopic pregnancy. Post-operatively, she develops peritonitis. N73.5 is used to code the peritonitis. The ectopic pregnancy is coded separately., A 40-year-old female with a history of endometriosis presents with acute abdominal pain and fever. Imaging reveals pelvic abscess with peritonitis. N73.5 is coded for the peritonitis.

Complete history and physical exam, including pelvic exam findings.Results of diagnostic tests (complete blood count, blood cultures, imaging studies such as ultrasound or CT scan to identify the location and extent of the peritonitis and any abscesses).Documentation of treatment rendered.

** This code is for unspecified pelvic peritonitis.If the cause and location are known, more specific codes may be applicable.Always review the latest ICD-10-CM guidelines for coding accuracy.