K91.1 Postgastric surgery syndromes

Billable ICD-10-CM code, FY2026.

Applicable to

• Dumping syndrome
• Postgastrectomy syndrome
• Postvagotomy syndrome

Applies from K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

Excludes2 (not included here)

• complications of artificial opening of digestive system (K94.-)
• complications of bariatric procedures (K95.-)
• gastrojejunal ulcer (K28.-)
• postprocedural (radiation) retroperitoneal abscess (K68.11)
• radiation colitis (K52.0)
• radiation gastroenteritis (K52.0)
• radiation proctitis (K62.7)

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 564.2 Postgastric surgery syndromes

Code annotations containing back-references to K91.1

Back-references to K91

• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)")

Diagnosis Index entries for K91.1

• Achlorhydria, achlorhydric (neurogenic) › secondary to vagotomy
• Complication (s) (from) (of) › gastrointestinal › postoperative › dumping syndrome
• Complication (s) (from) (of) › surgical procedure (on) › dumping syndrome (postgastrectomy)
• Complication (s) (from) (of) › surgical procedure (on) › postgastrectomy dumping syndrome
• Complication (s) (from) (of) › surgical procedure (on) › postvagotomy syndrome
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › postgastrectomy
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › postvagotomy
• Dumping syndrome (postgastrectomy)
• Postgastrectomy dumping syndrome
• Syndrome › dumping (postgastrectomy)
• Syndrome › postgastrectomy (dumping)
• Syndrome › postgastric surgery
• Syndrome › postvagotomy

Nearby codes

• K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
• K91.0 Vomiting following gastrointestinal surgery
• K91.1 Postgastric surgery syndromes (this code)
• K91.2 Postsurgical malabsorption, not elsewhere classified
• K91.3 Postprocedural intestinal obstruction
• K91.30 Postprocedural intestinal obstruction, unspecified as to partial versus complete
• K91.31 Postprocedural partial intestinal obstruction
• K91.32 Postprocedural complete intestinal obstruction