E72.22
Arginosuccinic aciduria
Clinical Classification Guidelines
Medical Intelligence & Overview
Arginosuccinic aciduria is a rare inherited metabolic disorder that affects the body's ability to process certain amino acids properly. This condition falls under the category of urea cycle disorders, which involve problems in removing ammonia from the bloodstream. If not diagnosed and managed early, arginosuccinic aciduria can lead to serious health complications, including neurological damage. This guide provides an overview of the causes, symptoms, diagnosis, and treatment options associated with this condition.
Causes & Symptoms
Clinical Causes: Genetic mutations in the ASL gene, which provides instructions for making the enzyme argininosuccinate lyase. Autosomal recessive inheritance, meaning a child must inherit two copies of the mutated gene (one from each parent) to develop the disorder. Lack or deficiency of the enzyme argininosuccinate lyase that is essential for the urea cycle.
Key Symptoms: Elevated blood ammonia levels (hyperammonemia), which can cause confusion, lethargy, or vomiting. Recurrent episodes of vomiting and poor feeding, especially in infants. Delayed developmental milestones or cognitive impairment over time. Seizures or abnormal muscle movements. Swelling and buildup of argininosuccinic acid in the liver, skin, or other tissues. Possible growth delays and failure to thrive in children. Lethargy or unresponsiveness in severe cases.
Diagnostic & Treatment
Diagnosis Path: Diagnosis of arginosuccinic aciduria involves a combination of clinical evaluation, laboratory tests, and molecular studies. Key steps include:
Treatment Protocols: Managing arginosuccinic aciduria primarily focuses on controlling ammonia levels and preventing metabolic crises. Treatment strategies include:
Clinical Advice & FAQs
Billing Guidance
Is E72.22 a billable ICD-10 code?
Yes, E72.22 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E72.22?
Clinical documentation must specify the nature of Arginosuccinic aciduria and any associated comorbidities for accurate reporting.
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