ICD-10 Code K31.0 – Acute dilatation of stomach (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K31.0 – Acute dilatation of stomach
What it is
K31.0 identifies acute dilatation of the stomach, a sudden enlargement of the stomach that can be clinically significant. Use it when the record clearly documents this specific gastric distention.
Clinical signs
Clinical features vary; refer to documentation. Typical references describe abdominal distention, epigastric discomfort, nausea, and vomiting, but you should code only when the provider documents acute gastric dilatation.
When to use this code
Use K31.0 when the diagnosis is explicitly stated in the medical record, such as an admission note, consult, or discharge summary. It may also fit when imaging or operative documentation supports acute stomach dilatation and the provider confirms the diagnosis. Check documentation if the note only says abdominal distention.
Do not use for
Do not use this code for general bloating, ileus, or other intestinal obstruction unless acute dilatation of the stomach is specifically documented. Avoid it when the record is vague or the stomach finding is not confirmed.
Coding tip
Query the provider when documentation mentions gastric distention but does not clearly state acute dilatation of the stomach.