D80.5: Immunodeficiency with increased immunoglobulin M [IgM]
D80.5 is the billable ICD-10-CM diagnosis code for Immunodeficiency with increased immunoglobulin M [IgM]. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code D80.5?
D80.5 is the ICD-10-CM diagnosis code for Immunodeficiency with increased immunoglobulin M [IgM]. It belongs to category D80 (Immunodeficiency with predominantly antibody defects).
Is D80.5 a billable code?
Yes. D80.5 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does D80.5 belong to?
D80.5 is part of ICD-10-CM category D80 — Immunodeficiency with predominantly antibody defects, which has 20 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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