D80.3
Selective deficiency of immunoglobulin G [IgG] subclasses
Clinical Classification Guidelines
Medical Intelligence & Overview
Selective deficiency of immunoglobulin G (IgG) subclasses is a rare immunodeficiency disorder characterized by the body's inability to produce adequate amounts of specific IgG subclasses. Immunoglobulins, or antibodies, are vital components of the immune system that help defend the body against infections. Among these, IgG antibodies are the most common type found in blood and extracellular fluid, playing a key role in protecting against bacterial and viral infections. When there is a deficiency in one or more IgG subclasses, individuals may experience increased susceptibility to infections, especially those caused by encapsulated bacteria. This condition is specifically coded as D80.3 in the ICD-10 classification, highlighting its role as a distinct immunodeficiency disorder.
Causes & Symptoms
Clinical Causes: Genetic mutations affecting immunoglobulin production Familial history of immunodeficiency disorders Autoimmune conditions that impair immune function Secondary factors such as certain medications or infections that impact immune responses
Key Symptoms: Recurrent sinopulmonary infections, such as sinusitis and pneumonia Frequent ear infections (otitis media) Chronic or recurrent bronchitis Sinus congestion or sinusitis Increased vulnerability to infections caused by encapsulated bacteria like Streptococcus pneumoniae and Haemophilus influenzae Possibility of mild to moderate fatigue due to ongoing infections
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a combination of clinical history, physical examination, and laboratory tests. Key tests include measuring serum immunoglobulin levels, specifically focusing on IgG subclasses (IgG1, IgG2, IgG3, IgG4). A significant decrease or absence of one or more IgG subclasses indicates selective deficiency. Recurrent infections and history of immune problems support the diagnostic process. Additionally, doctors may perform other immunological assessments to rule out broader immune system disorders.
Treatment Protocols: Regular use of vaccinations to prevent common infections Prompt treatment of infections with appropriate antibiotics Immunoglobulin replacement therapy in severe cases to boost antibody levels Monitoring and managing associated health conditions Personalized medical plans to address specific deficiencies and reduce infection risks
Clinical Advice & FAQs
Billing Guidance
Is D80.3 a billable ICD-10 code?
Yes, D80.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report D80.3?
Clinical documentation must specify the nature of Selective deficiency of immunoglobulin G [IgG] subclasses and any associated comorbidities for accurate reporting.
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