Other neonatal peritonitis

This code represents inflammation of the peritoneum in a newborn, not specifically due to meconium or other specified causes. It indicates a generalized or localized infection or sterile inflammation of the abdominal lining occurring shortly after birth.

Use this code when documentation specifies neonatal peritonitis without a clear etiology such as meconium, or when the peritonitis is secondary to an unspecified infection or other non-meconium related cause. Supporting documentation would include clinical findings of abdominal distension, tenderness, feeding intolerance, and imaging suggestive of peritonitis in a neonate.

• Differentiate from P78.0 (Meconium peritonitis) based on documentation of meconium as the causative agent.
• Consider additional codes for underlying infections (e.g., bacterial sepsis) if documented.
• Ensure the documentation clearly specifies "neonatal" to distinguish from peritonitis in older infants or children.