Acute or unspecified pelvic peritonitis, female

This code signifies an acute inflammatory process affecting the peritoneum within the female pelvis, which can be sudden in onset or of unknown etiology. It involves the serous membrane lining the abdominal cavity and covering the pelvic organs. This condition often presents with severe pelvic pain, fever, and signs of infection.

Apply this code when documentation clearly indicates acute inflammation of the pelvic peritoneum in a female patient, without further specification of the underlying cause. It is appropriate for cases of acute pelvic peritonitis where the specific infectious agent or primary source (e.g., ruptured appendix, tubo-ovarian abscess) is not yet identified or is unspecified. Documentation should support an acute presentation and localization to the pelvic region.

• Do not use if a more specific cause of peritonitis (e.g., peritonitis due to ruptured ectopic pregnancy) is documented.
• Consider sequencing this code as a principal diagnosis if it is the primary reason for the encounter and treatment.
• Ensure documentation differentiates acute from chronic or other specified forms of peritonitis.