ICD-10-CM
ICD-10 code for Syndrome postgastric surgery: K91.1
The ICD-10-CM index points "Syndrome postgastric surgery" to K91.1, Postgastric surgery syndromes. K91.1 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
Run it in Rivvi
Check every code on your export
Upload a claims or problem-list export. Rivvi flags codes that are not billable, replaced, or unspecified when a specific code exists.
Check my exportFree to start. Opens Rivvi, the AI workspace for healthcare teams.
More specific codes in K91
A header groups codes and is not billed. A billable code is one you can report.
- K91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classifiedHeader
- K91.0Vomiting following gastrointestinal surgeryBillable
- K91.1Postgastric surgery syndromesBillable
- K91.2Postsurgical malabsorption, not elsewhere classifiedBillable
- K91.3Postprocedural intestinal obstructionHeader
- K91.30Postprocedural intestinal obstruction, unspecified as to partial versus completeBillable
- K91.31Postprocedural partial intestinal obstructionBillable
- K91.32Postprocedural complete intestinal obstructionBillable
- K91.5Postcholecystectomy syndromeBillable
- K91.6Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedureHeader
- K91.61Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a digestive system procedureBillable
- K91.62Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating other procedureBillable
- K91.7Accidental puncture and laceration of a digestive system organ or structure during a procedureHeader
- K91.71Accidental puncture and laceration of a digestive system organ or structure during a digestive system procedureBillable
- K91.72Accidental puncture and laceration of a digestive system organ or structure during other procedureBillable
- K91.8Other intraoperative and postprocedural complications and disorders of digestive systemHeader
- K91.81Other intraoperative complications of digestive systemBillable
- K91.82Postprocedural hepatic failureBillable
- K91.83Postprocedural hepatorenal syndromeBillable
- K91.84Postprocedural hemorrhage of a digestive system organ or structure following a procedureHeader
- K91.840Postprocedural hemorrhage of a digestive system organ or structure following a digestive system procedureBillable
- K91.841Postprocedural hemorrhage of a digestive system organ or structure following other procedureBillable
- K91.85Complications of intestinal pouchHeader
- K91.850PouchitisBillable
- K91.858Other complications of intestinal pouchBillable
- K91.86Retained cholelithiasis following cholecystectomyBillable
- K91.87Postprocedural hematoma and seroma of a digestive system organ or structure following a procedureHeader
- K91.870Postprocedural hematoma of a digestive system organ or structure following a digestive system procedureBillable
- K91.871Postprocedural hematoma of a digestive system organ or structure following other procedureBillable
- K91.872Postprocedural seroma of a digestive system organ or structure following a digestive system procedureBillable
- K91.873Postprocedural seroma of a digestive system organ or structure following other procedureBillable
- K91.89Other postprocedural complications and disorders of digestive systemBillable
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From K91. A note on a category applies to every code under it.
Related conditions
Related pages
- K91.1 code detailsNotes, nearby codes, CMS-HCC group
- Category K91Every code under it
- Chapter 11Diseases of the digestive system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Syndrome postgastric surgery?
The ICD-10-CM index points "Syndrome postgastric surgery" to K91.1, Postgastric surgery syndromes. K91.1 is a billable code.
Is K91.1 billable?
Yes. K91.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to K91.1?
The CDC tabular list gives 7 Excludes2 notes (may be coded together when both are documented) for K91.1 and the categories above it. They are listed on this page.
What chapter is K91.1 in?
Chapter 11. Diseases of the digestive system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.