K91.89Other postprocedural complications and disorders of digestive system

K91.89 is the ICD-10-CM diagnosis code for other postprocedural complications and disorders of digestive system. 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 K91.8, choose K91.89 (Other postprocedural complications and disorders of digestive system) only when documentation doesn't support a more specific option: other intraoperative complications of digestive system (K91.81), postprocedural hepatic failure (K91.82), postprocedural hepatorenal syndrome (K91.83), postprocedural hemorrhage of a digestive system organ or structure following a procedure (K91.84), complications of intestinal pouch (K91.85), retained cholelithiasis following cholecystectomy (K91.86) and postprocedural hematoma and seroma of a digestive system organ or structure following a procedure (K91.87).

The conditions in its Excludes2 note aren't part of K91.89, but may be coded alongside it if the patient has both: postprocedural retroperitoneal abscess (K68.11).

Use an additional code, if applicable, to further specify disorder.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228), DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 06 (Diseases and Disorders of the Digestive System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 564.4 (other postoperative functional disorders) and 997.49 (other digestive system complications).