E75.244
Niemann-Pick disease type A/B
Clinical Classification Guidelines
Inclusion Terms
- Acid sphingomyelinase deficiency type A/B (ASMD type A/B)
- Chronic neurovisceral acid sphingomyelinase deficiency
Medical Intelligence & Overview
Niemann-Pick disease type A/B, also known as Acid Sphingomyelinase Deficiency type A/B, is a rare genetic disorder that affects how the body processes certain fats, leading to their buildup in various organs. This condition results from a deficiency in the enzyme acid sphingomyelinase, which is essential for breaking down sphingomyelin, a fat component found in cell membranes. The accumulation of sphingomyelin can cause progressive damage to vital organs and the nervous system, leading to serious health challenges. Understanding this condition is crucial for early detection and management, even though there is currently no cure.
Causes & Symptoms
Clinical Causes: Inherited genetic mutations in the SMPD1 gene Autosomal recessive inheritance pattern, meaning both parents must carry the mutated gene Deficiency or malfunction of the enzyme acid sphingomyelinase Genetic testing can confirm the presence of mutations associated with the disease
Key Symptoms: Progressive neurovisceral symptoms such as difficulty moving, muscle weakness, and intellectual decline Hepatosplenomegaly (enlargement of the liver and spleen) Feeding difficulties in infants Hearing loss or impairments Cherry-red spot in the eye (a characteristic eye finding) Less severe neurodegeneration compared to Niemann-Pick disease type A
Diagnostic & Treatment
Diagnosis Path: Diagnosing Niemann-Pick disease type A/B involves a combination of clinical evaluations, imaging studies, and laboratory tests. Blood tests measuring enzyme activity can reveal deficiencies in acid sphingomyelinase. Genetic testing identifies mutations in the SMPD1 gene. A thorough medical history and physical examination help assess symptom progression and organ involvement. In some cases, tissue biopsies and imaging scans assist in confirming the diagnosis.
Treatment Protocols: Medications to manage neurological symptoms Supportive therapies such as physical, occupational, and speech therapy Monitoring and treating organ complications like liver and spleen enlargement Nutritional support to address feeding difficulties Participating in clinical trials for emerging therapies
Clinical Advice & FAQs
Billing Guidance
Is E75.244 a billable ICD-10 code?
Yes, E75.244 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E75.244?
Clinical documentation must specify the nature of Niemann-Pick disease type A/B and any associated comorbidities for accurate reporting.
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