Billing and Coding: Immune Globulin Intravenous (IVIg)

IVIg billing requires clear physician documentation of medical necessity for initiation and continued therapy and must follow the associated LCD for covered indications. Required documentation includes a history and physical, office/progress notes, test results with written interpretation, and an accurate pre-infusion weight in kilograms because dosing is calculated mg/kg; lack of such documentation may lead to denial.

"Coverage limited to indications and criteria specified in the associated LCD; absence of documented medical necessity for initiation or continued IVIg therapy may result in denial of payment."

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