Inspire HGNS denied as non-formulary by Aetna?

Aetna's specific coverage criteria for inspire hgns 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 Aetna May Issue a Non-Formulary Denial for Inspire HGNS

Inspire hypoglossal nerve stimulation is a surgical implant rather than a pharmacy drug, so a "non-formulary" denial in this context typically reflects one of two things: (1) the procedure or device is not listed on Aetna's covered benefits schedule for your specific plan, or (2) the device itself has not been recognized under the benefit category your plan uses for durable medical devices or surgical implants. Unlike drug formulary exclusions, benefit-structure denials for implantable devices can stem from how the claim was coded or which benefit category it was submitted under, as well as from genuine coverage limitations in the plan design.

## Why This Denial Is Appealable

If Aetna's clinical policy bulletin includes criteria under which HGNS is a covered benefit — and Aetna does publish such a policy — then a non-formulary or benefit-exclusion denial may be inconsistent with Aetna's own coverage framework. The appeal should establish that Inspire falls within a covered benefit category (surgical implant, durable medical device, or hospital/surgical benefit, as applicable) and that the clinical criteria for coverage are met. Administrative denials based on how a claim was filed are often resolved by resubmission with corrected codes; denials based on benefit design require a full medical-necessity appeal.

## Your Federal Appeal Rights

• Benefit determination appeal (ACA §2719): File a written internal appeal challenging the benefit-exclusion or non-formulary classification.
• Claim resubmission: If the denial reflects a coding error, work with the implanting facility and the surgeon's billing team to resubmit under the correct benefit category before or alongside the appeal.
• External review: After exhausting internal appeals, request independent external review. External reviewers can assess both the clinical and benefit-classification questions.
• ERISA §503: For employer self-funded plans, request the plan document language describing covered surgical benefits and the definition of covered devices.
• Expedited review: Available for urgent clinical situations.
• Timeline: File external review within four months of the final internal adverse determination.

## Documentation to Gather

1. Plan document and summary plan description: Obtain the exact language describing surgical benefits, implantable device benefits, and any exclusion language Aetna is relying on. 2. Aetna's clinical policy bulletin for HGNS: Confirm that HGNS is listed as a potentially covered service under stated criteria in the current bulletin. 3. Claim submission records: Review the procedure codes, diagnosis codes, and benefit category under which the claim was submitted. Confirm they align with the correct benefit category. 4. Sleep study and PAP trial records: Even for a benefit-classification dispute, having the full clinical record ready ensures that if the appeal shifts to medical necessity, you are prepared. 5. Prescriber / surgeon letter: A letter explaining the nature of the device, its FDA approval status, and the clinical indication, addressed to both the benefit-classification and medical-necessity questions.

## Criteria-Mapping Structure

For a non-formulary or benefit-exclusion appeal, the mapping table has an additional dimension: (1) map the device to the correct covered benefit category using plan document language; (2) map your clinical circumstances to each criterion in Aetna's clinical policy bulletin. Present both mappings in parallel. If the denial was administrative, document the correct coding and request expedited reprocessing. If it was substantive, the full criteria-mapping approach — left column: Aetna's published criteria; right column: specific chart facts — is essential.