E74.1
Disorders of fructose metabolism
Clinical Classification Guidelines
Excludes Type 1
- muscle phosphofructokinase deficiency (E74.09)
Medical Intelligence & Overview
Disorders of fructose metabolism, classified under ICD-10 code E74.1, are a group of rare inherited conditions where the body cannot properly process fructose, a type of sugar found in many fruits, honey, and some vegetables. These metabolic disorders can lead to various health issues if not diagnosed and managed appropriately. Understanding the nature of these disorders helps in recognizing symptoms and the importance of medical supervision for those affected.
Causes & Symptoms
Clinical Causes: Genetic mutations affecting enzymes involved in fructose breakdown Inheritance patterns, often autosomal recessive, meaning both parents must carry the gene mutation for a child to be affected Deficiencies in specific enzymes such as aldolase B (fructose intolerance) and sorbitol dehydrogenase Mutations leading to enzyme deficiencies that impair the conversion of fructose into usable forms of energy Potential environmental factors that may influence the expression of metabolic disturbances, although primarily genetic
Key Symptoms: Nausea and vomiting after consuming fructose or sucrose-containing foods Abdominal pain and bloating Hypoglycemia (low blood sugar), especially after ingesting fructose Lethargy and fatigue Jaundice or jaundice-like symptoms in some cases Failure to thrive in infants and young children Irritability and behavioral changes Elevated levels of fructose or related substances in blood or urine Hepatomegaly (enlarged liver) in certain cases Potential development of liver or kidney issues if untreated
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a combination of dietary assessments, blood tests, urine tests, and enzymatic activity measurements. Key steps include: - Clinical history review focusing on dietary habits and symptoms - Blood tests to detect abnormal levels of sugars and metabolic byproducts - Urinalysis to identify excess fructose or related compounds - Enzymatic assays to measure activity of fructose-metabolizing enzymes - Genetic testing to identify mutations in relevant genes - Specialized tests such as fructose tolerance tests may be used cautiously Accurate diagnosis helps distinguish these disorders from other metabolic or gastrointestinal conditions.
Treatment Protocols: Management of fructose metabolism disorders primarily involves dietary modifications to prevent symptoms and prevent complications. Treatment strategies include: - Strictly limiting or avoiding foods and beverages high in fructose, sucrose, and sorbitol - Monitoring dietary intake with guidance from a dietitian - Regular follow-up to assess growth and development in children - Managing hypoglycemia episodes with appropriate interventions - Supportive care for symptoms such as gastrointestinal discomfort - Patient education on reading food labels and avoiding hidden sources of fructose - In some cases, supplementation of certain nutrients or enzymes may be considered as part of comprehensive care - In severe cases, ongoing medical supervision is essential to prevent organ damage or other complications
Clinical Advice & FAQs
Billing Guidance
Is E74.1 a billable ICD-10 code?
Yes, E74.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E74.1?
Clinical documentation must specify the nature of Disorders of fructose metabolism and any associated comorbidities for accurate reporting.
Cite this Clinical Reference