Postprocedural retroperitoneal abscess

This code identifies an abscess that develops in the retroperitoneal space as a complication of a surgical or invasive procedure. It signifies a localized collection of pus occurring after an intervention, specifically within the anatomical region behind the peritoneum.

Assign this code when documentation clearly indicates a retroperitoneal abscess arising as a direct consequence of a recent surgical or diagnostic procedure. Supporting documentation should specify both the abscess location and its postprocedural etiology.

• Differentiate from spontaneous retroperitoneal abscesses, which are coded differently.
• Do not use for general postprocedural infections without a documented abscess in the retroperitoneal space.
• Consider sequencing with the code for the underlying procedure if still within the global period or if the procedure is the primary reason for the encounter.