E75.241
Niemann-Pick disease type B
Clinical Classification Guidelines
Inclusion Terms
- Acid sphingomyelinase deficiency type B (ASMD type B)
- Chronic visceral acid sphingomyelinase deficiency
Medical Intelligence & Overview
Niemann-Pick disease type B, also known as acid sphingomyelinase deficiency type B (ASMD type B), is a rare genetic disorder that affects the body's ability to break down certain fats. This leads to the accumulation of these fats in various organs, primarily impacting the spleen, liver, lungs, and other parts of the body. Unlike other forms of Niemann-Pick disease, type B typically does not involve neurodegeneration, and many individuals can live into adulthood with proper management of symptoms.
Causes & Symptoms
Clinical Causes: Inherited condition caused by mutations in the SMPD1 gene Autosomal recessive inheritance, meaning both parents must pass on a defective gene Deficiency of the enzyme acid sphingomyelinase, leading to fat accumulation
Key Symptoms: Enlarged spleen (splenomegaly) Enlarged liver (hepatomegaly) Respiratory issues due to lung involvement Easy bruising or bleeding due to low blood cell counts Increased susceptibility to infections Fatigue and weakness In some cases, bone abnormalities
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a combination of clinical examination, blood tests to measure enzyme activity, and genetic testing to identify mutations in the SMPD1 gene. Imaging studies such as ultrasound or MRI may be used to assess organ enlargement. A definitive diagnosis often requires testing for acid sphingomyelinase activity in leukocytes or fibroblasts.
Treatment Protocols: While there is currently no cure for Niemann-Pick disease type B, treatment focuses on managing symptoms and preventing complications. Approaches may include monitoring organ size, managing respiratory problems, and addressing hematological issues. Researchers are exploring enzyme replacement therapies and other targeted treatments, but these are not yet widely available. Supportive care, including physical therapy and nutritional support, can improve quality of life.
Clinical Advice & FAQs
Billing Guidance
Is E75.241 a billable ICD-10 code?
Yes, E75.241 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report E75.241?
Clinical documentation must specify the nature of Niemann-Pick disease type B and any associated comorbidities for accurate reporting.
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