ICD-10-CM 2027
ICD-10 code for Dumping postgastrectomy syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › dumping (postgastrectomy)”. Page updated September 29, 2026.
About coding Dumping postgastrectomy syndrome
The ICD-10-CM code for Dumping postgastrectomy syndrome is K91.1 (Postgastric surgery syndromes). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K91.1.
Within K91 (intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified), K91.1 is specifically for Postgastric surgery syndromes. Related codes cover vomiting following gastrointestinal surgery (K91.0), 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.
More specific Dumping postgastrectomy syndrome codes (official index)
- nonsurgical K31.89 — Other diseases of stomach and duodenum
Common questions about Dumping postgastrectomy syndrome ICD-10 codes
What is the ICD-10 code for Dumping postgastrectomy syndrome?
- K91.1 — Postgastric surgery syndromes. More specific codes apply when the documentation supports them: K31.89.
What is the ICD-10 code for nonsurgical dumping postgastrectomy syndrome?
- K31.89 — Other diseases of stomach and duodenum.
Is K91.1 billable?
- Yes. K91.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K91.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K91.1 as a principal diagnosis.
Is K91.1 a CC or MCC?
- No. K91.1 is neither a CC nor an MCC under MS-DRG v44.0.