K56.3
Gallstone ileus
Clinical Classification Guidelines
Inclusion Terms
- Obstruction of intestine by gallstone
Medical Intelligence & Overview
Gallstone ileus is a rare form of bowel obstruction caused by a gallstone that has migrated from the gallbladder into the intestines. This condition typically occurs in older adults and can cause significant digestive issues. It is a complication that arises when a large gallstone passes through a fistula—a channel that forms between the gallbladder and the gastrointestinal tract—and becomes lodged, blocking the intestinal passage.
Causes & Symptoms
Clinical Causes: Presence of a cholecystoenteric fistula, allowing gallstones to pass from the gallbladder into the intestines. Formation of large gallstones, typically over 2.5 centimeters in diameter, capable of causing obstruction. Prolonged inflammation or infection of the gallbladder (cholecystitis) leading to fistula development. Previous gallstone disease, which increases the risk of gallstone migration and impaction.
Key Symptoms: Nausea and vomiting, often persistent and severe. Abdominal pain or discomfort, particularly in the upper right or middle abdomen. Abdominal distension and bloating. Signs of bowel obstruction, such as constipation or inability to pass gas. Possible fever and chills if infection develops. General weakness or malaise.
Diagnostic & Treatment
Diagnosis Path: Diagnosing gallstone ileus involves a combination of clinical evaluation and imaging studies. Key steps include: - Medical history review focusing on previous gallbladder issues. - Physical examination to identify abdominal tenderness, distention, and signs of obstruction. - Imaging tests such as abdominal X-rays, which may reveal the classic Rigler's triad: pneumobilia (air in bile ducts), evidence of intestinal obstruction, and ectopic gallstone. - Computed tomography (CT) scans provide detailed visualization of the gallstone location and the extent of obstruction. - Ultrasound can sometimes identify gallstones but may be less effective if bowel gas obscures the view.
Treatment Protocols: Management of gallstone ileus typically requires surgical intervention. Common approaches include: - Enterolithotomy: Surgical removal of the obstructing gallstone through an incision in the intestine. - In some cases, cholecystectomy (removal of the gallbladder) and fistula repair are performed during the same procedure to prevent recurrence. - Non-surgical options are generally limited and reserved for patients who are poor surgical candidates. - Supportive care such as intravenous fluids, electrolyte correction, and nutritional support are essential pre- and post-operatively. - Early diagnosis and prompt surgical treatment are crucial for favorable outcomes.
Clinical Advice & FAQs
Billing Guidance
Is K56.3 a billable ICD-10 code?
Yes, K56.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report K56.3?
Clinical documentation must specify the nature of Gallstone ileus and any associated comorbidities for accurate reporting.
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