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K91.1

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Postgastric surgery syndromes

Filed alongside this entry 777

under Syndrome

Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.

Billable FY2027 2026-10-01 → 2027-09-30
How to use this page

Everything the published sources say about one code, on one page.

  1. Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
  2. Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
  3. Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
  4. Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
  5. Risk-model chips show which published CMS models map this code.

What this page does not do

  • Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
  • Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".

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Exclusions15never code together
K91code
Excludes2
  • complications of artificial opening of digestive system (K94.-)K94.-
  • complications of bariatric procedures (K95.-)K95.-
  • gastrojejunal ulcer (K28.-)K28.-
  • postprocedural (radiation) retroperitoneal abscess (K68.11)K68.11
  • radiation colitis (K52.0)K52.0
  • radiation gastroenteritis (K52.0)K52.0
  • radiation proctitis (K62.7)K62.7
K00-K95chapter
Excludes2
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes3
K91.1code
Inclusion terms
  • Dumping syndrome
  • Postgastrectomy syndrome
  • Postvagotomy syndrome
Official Guidelines1names this code

ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.

I.C.11 Chapter 11: Diseases of the Digestive System (K00-K95) names this code p.58

Reserved for future guideline expansion

Index entries leading here6
  • Achlorhydria, achlorhydric (neurogenic) K31.83
    • secondary to vagotomy K91.1
  • Complication (s) (from) (of)
    • gastrointestinal K92.9
      • postoperative
    • surgical procedure (on) T81.9
      • dumping syndrome (postgastrectomy) K91.1
      • postgastrectomy dumping syndrome K91.1
      • postvagotomy syndrome K91.1
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory) R19.7
  • Syndrome — see also Disease
    • dumping (postgastrectomy) K91.1
    • postgastrectomy (dumping) K91.1
    • postgastric surgery K91.1
    • postvagotomy K91.1
  • Dumping syndrome (postgastrectomy) K91.1
  • Postgastrectomy dumping syndrome K91.1
Alongside this code7same parent — K91
K91.0 Vomiting following gastrointestinal surgery K91.2 Postsurgical malabsorption, not elsewhere classified K91.3 Postprocedural intestinal obstruction category K91.5 Postcholecystectomy syndrome K91.6 Intraop hemor/hemtom of a dgstv sys org comp a procedure category K91.7 Accidental pnctr & lac of a digestive system org dur proc category K91.8 Oth intraop and postproc comp and disorders of dgstv sys category
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2027
Parent
K91
Block
K90-K95
Siblings
7

Present FY2018–FY2027.