| ICD-10 Code | Description |
| K91.0 | Vomiting following gastrointestinal surgery |
| K91.1 | Postgastric surgery syndromes |
| K91.2 | Postsurgical malabsorption, not elsewhere classified |
| K91.30 | Postprocedural intestinal obstruction, unspecified as to partial versus complete |
| K91.31 | Postprocedural partial intestinal obstruction |
| K91.32 | Postprocedural complete intestinal obstruction |
| K91.5 | Postcholecystectomy syndrome |
| K91.61 | Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a digestive system procedure |
| K91.62 | Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating other procedure |
| K91.71 | Accidental puncture and laceration of a digestive system organ or structure during a digestive system procedure |
| K91.72 | Accidental puncture and laceration of a digestive system organ or structure during other procedure |
| K91.81 | Other intraoperative complications of digestive system |
| K91.82 | Postprocedural hepatic failure |
| K91.83 | Postprocedural hepatorenal syndrome |
| K91.840 | Postprocedural hemorrhage of a digestive system organ or structure following a digestive system procedure |
| K91.841 | Postprocedural hemorrhage of a digestive system organ or structure following other procedure |
| K91.850 | Pouchitis |
| K91.858 | Other complications of intestinal pouch |
| K91.86 | Retained cholelithiasis following cholecystectomy |
| K91.870 | Postprocedural hematoma of a digestive system organ or structure following a digestive system procedure |
| K91.871 | Postprocedural hematoma of a digestive system organ or structure following other procedure |
| K91.872 | Postprocedural seroma of a digestive system organ or structure following a digestive system procedure |
| K91.873 | Postprocedural seroma of a digestive system organ or structure following other procedure |
| K91.89 | Other postprocedural complications and disorders of digestive system |
