E74.11 Essential fructosuria

Name of the Condition

• Essential fructosuria (ICD-10 Code E74.11)

Summary

Essential fructosuria is a rare, benign genetic disorder that impairs the body's ability to metabolize fructose, a simple sugar found in fruits, vegetables, and sweeteners. Unlike other fructose metabolism disorders, it typically does not cause significant clinical symptoms or complications.

Causes

Essential fructosuria is caused by a deficiency of the enzyme fructokinase, which is involved in the initial step of fructose metabolism. This deficiency is inherited in an autosomal recessive pattern, meaning both parents must carry a mutated gene for the condition to manifest.

Risk Factors

• Genetic Predisposition: Family history of essential fructosuria increases risk.
• Ethnicity: May have higher prevalence in certain populations, though specific data is limited.

Symptoms

• Asymptomatic in most cases; often detected incidentally during routine testing.
• Mild, non-specific symptoms (e.g., nausea, abdominal discomfort) may occur in rare instances after high fructose intake.

Diagnosis

Diagnosis involves clinical evaluation of symptoms, dietary history, and laboratory testing. Urine tests may show elevated fructose levels, and genetic testing can confirm the presence of fructokinase mutations.

Treatment Options

No specific treatment is required for essential fructosuria, as it is generally benign. Management focuses on ensuring adequate hydration and monitoring for any rare symptoms.

Prognosis and Follow-Up

Prognosis is excellent, with most individuals living normal, healthy lives without complications. Routine follow-up is unnecessary unless symptoms develop.

Complications

Complications are extremely rare and typically absent due to the benign nature of the condition.

Lifestyle & Prevention

No specific lifestyle modifications are needed. A balanced diet is recommended, but avoidance of fructose is not required.

When to Seek Professional Help

Seek medical attention if symptoms such as persistent nausea, abdominal pain, or unexplained weight loss occur, though these are uncommon in essential fructosuria.

Tips for Medical Coders

Document the presence of fructokinase deficiency or genetic confirmation when available. Ensure coding aligns with clinical documentation, as essential fructosuria is distinct from other fructose metabolism disorders.