PIDD / CVID (Primary Immunodeficiency)
Primary immunodeficiency diseases (PIDD) are a group of over 400 disorders where part of the immune system is missing or doesn't function properly. CVID (Common Variable Immunodeficiency) is the most frequently diagnosed form, causing low antibody levels and recurrent infections. Lifelong immunoglobulin replacement therapy is the standard of care.
You may qualify for clinical trials that provide Gammagard Liquid at no cost
Clinical trials may give you access to this treatment while helping advance medical research
Search TrialsImmunoglobulin replacement therapy is medically necessary for PIDD/CVID. However, insurers often require documentation of low IgG levels (<400–500 mg/dL), failed vaccine challenge responses, and recurrent infection history. Many plans require trial of subcutaneous immunoglobulin (SCIg) before approving IVIG, citing lower cost and similar efficacy.
Quantitative immunoglobulin levels not documented or above threshold
Very Common
Vaccine challenge response testing not performed
Common
Subcutaneous formulation required before IV formulation
Common
Dose exceeds payer-preferred limits (typically 400–600mg/kg/month)
Occasional
Diagnosis not confirmed by immunologist
Occasional
- 1.Document quantitative immunoglobulin levels (IgG, IgA, IgM) and specific antibody responses to vaccines
- 2.Include history of recurrent infections (frequency, severity, hospitalizations)
- 3.If SCIg is not appropriate, document reasons (e.g., adverse reactions, poor absorption, compliance issues)
- 4.Cite AAAAI/ACAAI guidelines supporting immunoglobulin replacement for confirmed PIDD
- 5.Request review by an immunologist — non-specialist reviewers may not understand diagnostic criteria
Active clinical trials that may provide treatment at no cost.
Copay cards, patient assistance programs, and foundation grants for this condition's treatments.
Want to know what you'll actually pay?
Estimate your annual out-of-pocket cost with and without assistance programs.
Estimate My CostsDenied for PIDD / CVID (Primary Immunodeficiency) Treatment?
Ellen can decode your denial, find your appeal strategy, and generate your appeal letter — free.