D89.0
BillablePolyclonal hypergammaglobulinemia
HCC Category Mapping
RxHCCHCC 99 — Immunodeficiencies
0.000What This Code Means
An abnormal increase in immunoglobulins (antibody proteins) in the blood, which can occur in various infections, autoimmune diseases, or lymphoproliferative disorders.
Coding Tips
- •Identify and code the underlying cause if documented (infection, autoimmune disease, malignancy)
- •This is often a laboratory finding; ensure clinical significance is documented
Clinical Significance
Polyclonal hypergammaglobulinemia represents a non-specific elevation of multiple immunoglobulin classes, typically reflecting chronic immune system activation rather than a clonal proliferative disorder. It is commonly associated with chronic infections (HIV, hepatitis), autoimmune diseases (systemic lupus erythematosus, rheumatoid arthritis), and chronic liver disease. Unlike monoclonal gammopathy, it does not carry a risk of progression to myeloma.
Documentation Requirements
- ✓Documentation should include serum protein electrophoresis results showing a broad-based (polyclonal) elevation in the gamma region, quantitative immunoglobulin levels, and the underlying condition driving the immune activation.
- ✓The provider should document the clinical context and any workup performed to exclude monoclonal gammopathy.
- ✓Treatment is directed at the underlying cause rather than the hypergammaglobulinemia itself.
Commonly Confused Codes
D47.2 (Monoclonal gammopathy) represents a clonal process and should not be confused with polyclonal elevation. C90.0(Multiple myeloma) involves a malignant monoclonal plasma cell proliferation. D89.1 (Cryoglobulinemia) may coexist but represents a distinct pathology involving cold-precipitable immunoglobulins. R77.1 (Abnormality of globulin) is a less specific finding code.
Code Hierarchy
└D89Other disorders involving the immune mechanism, not elsewhere classified└D89.0Polyclonal hypergammaglobulinemia
└D89.0Polyclonal hypergammaglobulinemia