K91.1 — Postgastric surgery syndromes
K91.1 is a billable, specific ICD-10-CM code for postgastric surgery syndromes. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Dumping syndrome
- Postgastrectomy syndrome
- Postvagotomy syndrome
Risk adjustment
K91.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
K91.1 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A55937Billing and Coding: Diagnostic Colonoscopy
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A57755Billing and Coding: Vitamin B<sub>12</sub> Injections
- A58428Billing and Coding: Diagnostic Colonoscopy
How K91.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K91.1.
- Dumping syndrome(postgastrectomy)
- Postgastrectomy dumping syndrome
- Achlorhydria, achlorhydric›secondary to vagotomy
- Diarrhea, diarrheal›postgastrectomy
- Diarrhea, diarrheal›postvagotomy
- Syndrome›dumping(postgastrectomy)
- Syndrome›postgastrectomy(dumping)
- Syndrome›postgastric surgery
- Syndrome›postvagotomy
- Complication›surgical procedure›dumping syndrome(postgastrectomy)
- Complication›surgical procedure›postgastrectomy dumping syndrome
- Complication›surgical procedure›postvagotomy syndrome
Related codes at this level
Codes that share K91. If K91.1 is not quite right, the correct code is usually one of these.
- K91.0Vomiting following gastrointestinal surgery
- K91.2Postsurgical malabsorption, not elsewhere classified
- K91.3Postprocedural intestinal obstruction
- K91.5Postcholecystectomy syndrome
- K91.6Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure
- K91.7Accidental puncture and laceration of a digestive system organ or structure during a procedure
- K91.8Other intraoperative and postprocedural complications and disorders of digestive system
Questions about K91.1
- Is K91.1 a billable ICD-10-CM code?
- Yes. K91.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does K91.1 sit in the tabular list?
- Diseases of the digestive system (K00-K95), in the block Other diseases of the digestive system (K90-K95).