Disorders of peritoneum in infectious diseases classd elswhr

This code describes inflammation of the peritoneum (the membrane lining the abdominal cavity and organs) that occurs as a manifestation of an underlying infectious disease. It indicates that the peritonitis itself is not the primary infection but rather a complication or associated condition of another infectious process.

Use this code when documentation specifies peritonitis secondary to an infectious disease that has its own specific ICD-10-CM code. The primary infectious disease should be coded first, followed by this code. Documentation must clearly link the peritonitis to an underlying infection, such as viral, fungal, or parasitic infections, excluding those explicitly listed in the Excludes1 note.

• Always sequence the underlying infectious disease code first, followed by this code.
• Carefully review the Excludes1 list to avoid incorrect coding; these conditions have their own specific peritonitis codes.
• Ensure the documentation clearly states the infectious etiology of the peritonitis to support code assignment.