ICD-10 Code K90.4 – Other malabsorption due to intolerance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K90.4 – Other malabsorption due to intolerance
What it is
K90.4 identifies malabsorption caused by intolerance to a specific food or substance. Use it when absorption problems are linked to intolerance rather than another defined intestinal disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include chronic diarrhea, bloating, abdominal discomfort, weight loss, or nutrient deficiency when symptoms are tied to an intolerance.
When to use this code
Use K90.4 when the provider documents malabsorption due to intolerance and does not name a more specific cause. It fits cases where the intolerance is the stated reason for poor absorption. Check documentation for the exact substance or food involved.
Do not use for
Do not use this code for malabsorption with a clearly documented alternate cause, such as another intestinal disease. Do not assign it for intolerance without evidence of malabsorption.
Coding tip
Confirm that both intolerance and malabsorption are documented before assigning K90.4.