IVIG Privigen denied for missing prior authorization by Humana?

Humana's specific coverage criteria for ivig privigen are defined in its own published medical/coverage policy and the FDA-approved prescribing label. A successful appeal documents that your medical records satisfy each criterion those sources list — confirmed diagnosis, any required prior treatments (with dates and outcomes), and clinical severity. If the exact criteria weren't included with your denial, request them in writing; your appeal then maps each requirement to the matching fact in your chart.

## Why Humana Requires Prior Authorization for Privigen (IVIG)

Humana classifies Privigen (immune globulin intravenous, human — 10%) as a specialty biologic requiring prior authorization before infusion. A prior-authorization denial for IVIG most commonly means one of three things: the authorization was not requested before treatment began; the authorization was requested but the submitted clinical documentation did not meet Humana's medical-necessity criteria; or the request was approved for a different IVIG product rather than Privigen specifically. Identifying which scenario applies determines the fastest path to resolution.

## Why This Denial Is Appealable

When a prior-authorization denial is documentation-based, the appeal is an opportunity to supply the clinical evidence the initial submission lacked. Humana's prior-authorization criteria for IVIG are published in its medical policy — your prescribing specialist can write a letter that maps the patient's clinical presentation to every listed criterion. When the denial is a clinical disagreement, the prescriber has the right to a peer-to-peer review with Humana's medical director, and you have the right to a full internal appeal followed by external review. Humana's medical-necessity determination must be consistent with the applicable professional-society guidelines governing IVIG therapy.

## Your Federal Appeal Rights

• Internal appeal: ERISA §503 and ACA §2719 guarantee a full-and-fair review by a qualified reviewer not involved in the original denial. Submit within the deadline on your denial notice.
• External review: After an adverse internal determination, an Independent Review Organization provides independent clinical review. The external-review window is typically around four months from the final adverse determination. Expedited review (typically resolved within 72 hours) is available when your treating physician certifies that delay would seriously jeopardize your health or ability to regain maximum function.

## Concrete Appeal Steps and Timeline

1. Request the peer-to-peer review: the prescribing specialist calls Humana's medical reviewer to discuss the clinical rationale directly — this step alone reverses many denials before a formal appeal is needed. 2. Obtain Humana's current IVIG prior-authorization criteria from its coverage determination guidelines. 3. Have the prescribing physician write a medical-necessity letter addressing each criterion with specific chart references and citing the applicable professional-society guideline. 4. Compile the full documentation package and submit the internal appeal before the deadline. 5. Standard pre-service internal appeals: Humana must respond within 30 days; urgent within 72 hours. 6. Prepare the external-review request simultaneously so it can be filed immediately on any adverse internal decision.

## Documentation to Gather

• Diagnosis records confirming the specific indication: clinical notes, specialist evaluations, and diagnostic workup
• Documentation of clinical severity from the medical chart, as recorded by the treating clinician
• Prior treatment history with dates, agents tried, and documented outcomes
• Prescriber medical-necessity letter citing the applicable guideline organization and mapping each clinical finding to a coverage criterion
• Infusion site and administration plan (infusion center or home infusion), as Humana's criteria may include site-of-care requirements
• Any prior Humana correspondence about IVIG coverage for this patient

## Criteria-Mapping Structure

Obtain Humana's IVIG prior-authorization criteria from its published medical policy. List each requirement verbatim. For each requirement, write the specific chart fact — with the date of the note and the documenting clinician — that satisfies it. Submit this as a structured table or numbered list in your appeal letter. This format makes it straightforward for the reviewer to confirm that each criterion is met without having to search through unstructured narrative.