E73.1
Secondary lactase deficiency
Clinical Classification Guidelines
Medical Intelligence & Overview
Secondary lactase deficiency, classified under ICD-10 code E73.1, is a condition where the small intestine produces insufficient lactase enzyme after experiencing some form of intestinal injury or disease. Lactase is essential for digesting lactose, the sugar found in milk and dairy products. When lactase production diminishes, consuming dairy can lead to uncomfortable digestive symptoms. Unlike primary lactase deficiency, which is genetically determined and persists throughout life, secondary lactase deficiency is usually temporary and related to other health issues affecting the intestines.
Causes & Symptoms
Clinical Causes: Infections of the intestines, such as bacterial, viral, or parasitic infections Inflammatory bowel diseases like Crohn's disease or ulcerative colitis Gastrointestinal surgeries that remove parts of the small intestine Celiac disease leading to damage of the intestinal lining Radiation therapy affecting the gastrointestinal tract Severe or chronic diarrhea caused by various conditions Other gastrointestinal illnesses that damage the small intestinal mucosa
Key Symptoms: Bloating and abdominal discomfort after consuming dairy products Diarrhea or loose stools following dairy ingestion Gas and flatulence Nausea and sometimes vomiting Cramping abdominal pain General feelings of digestive upset
Diagnostic & Treatment
Diagnosis Path: Diagnosing secondary lactase deficiency involves a combination of medical history, symptom assessment, and diagnostic tests. These tests may include:
Treatment Protocols: Treatment for secondary lactase deficiency focuses on managing symptoms and addressing the underlying cause. Common approaches include:
Clinical Advice & FAQs
Billing Guidance
Is E73.1 a billable ICD-10 code?
Yes, E73.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E73.1?
Clinical documentation must specify the nature of Secondary lactase deficiency and any associated comorbidities for accurate reporting.
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