E71.42
Carnitine deficiency due to inborn errors of metabolism
Clinical Classification Guidelines
Code Also
- associated inborn error or metabolism
Medical Intelligence & Overview
Carnosine deficiency caused by inborn errors of metabolism is a rare genetic disorder impacting the body's ability to produce or process carnitine. Carnitine is a vital nutrient involved in energy production by transporting fatty acids into the cells' powerhouses, known as mitochondria. When there's a deficiency, it can lead to problems with energy generation, particularly affecting muscles and the heart. This condition is classified under ICD-10 code E71.42 and is often inherited, requiring specialized diagnosis and management.
Causes & Symptoms
Clinical Causes: Genetic mutations affecting enzymes involved in carnitine synthesis or transport Inborn errors of metabolism disrupting fatty acid oxidation pathways Secondary causes such as malnutrition or certain medical treatments that impair carnitine levels Familial inheritance patterns, often autosomal recessive
Key Symptoms: Muscle weakness and fatigue Hypotonia (reduced muscle tone) Myopathic symptoms including cramps and pain Cardiac issues like cardiomyopathy or arrhythmias Hypoglycemia, especially during fasting Poor appetite or feeding difficulties in infants Liver dysfunction in some cases
Diagnostic & Treatment
Diagnosis Path: Blood tests measuring free and total carnitine levels Urine analysis for acylcarnitine profiles Genetic testing to identify mutations in relevant genes Muscle biopsy in some cases to analyze enzyme activity Assessment of symptoms and medical history to guide diagnosis
Treatment Protocols: Supplementation with oral or intravenous carnitine to restore deficiency levels Dietary modifications to include nutrient-rich, low-fat foods that support metabolism Monitoring and treatment of cardiac and muscular symptoms as needed Regular follow-up with healthcare providers specialized in metabolic disorders Genetic counseling for affected families to understand inheritance and risk
Clinical Advice & FAQs
Billing Guidance
Is E71.42 a billable ICD-10 code?
Yes, E71.42 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E71.42?
Clinical documentation must specify the nature of Carnitine deficiency due to inborn errors of metabolism and any associated comorbidities for accurate reporting.
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