ICD-10 Code K91.0 – Vomiting following gastrointestinal surgery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K91.0 – Vomiting following gastrointestinal surgery
What it is
K91.0 identifies vomiting that occurs as a complication after gastrointestinal surgery. Use it when the record links the vomiting to a prior GI operation rather than to another cause.
Clinical signs
Typical documentation may note nausea with repeated vomiting after surgery, sometimes with poor oral tolerance or abdominal discomfort. Clinical features vary; refer to documentation.
When to use this code
Use K91.0 when the provider states that vomiting is a postoperative complication of gastrointestinal surgery. It may apply during the immediate recovery period or later if the relationship to surgery is documented. If the cause is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for vomiting unrelated to surgery, such as viral illness, medication effects, or pregnancy. Do not assign it when the chart does not link the vomiting to a gastrointestinal procedure.
Coding tip
Confirm the operative history and the provider’s causal wording before coding K91.0.