K91.0Vomiting following gastrointestinal surgery

K91.0 is the ICD-10-CM diagnosis code for vomiting following gastrointestinal surgery. It belongs to category K91 (intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified), block K90-K95 (other diseases of the digestive system) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within K91 (intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified), K91.0 is specifically for vomiting following gastrointestinal surgery. Related codes cover Postgastric surgery syndromes (K91.1), postsurgical malabsorption, not elsewhere classified (K91.2), postprocedural intestinal obstruction (K91.3), Postcholecystectomy syndrome (K91.5), intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure (K91.6), accidental puncture and laceration of a digestive system organ or structure during a procedure (K91.7) and other intraoperative and postprocedural complications and disorders of digestive system (K91.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 564.3 (vomiting following gastrointestinal surgery).