Cgm Dexcom denied as non-formulary by Humana?

Humana's specific coverage criteria for cgm dexcom 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 Denies Dexcom CGM as Non-Formulary

Humana's formulary (drug list) may place the Dexcom CGM system in a non-covered tier, or it may not appear on the formulary at all. This denial does not mean the device is medically inappropriate — it means Humana has not included it among the preferred options for your plan benefit tier. Non-formulary denials are among the most commonly overturned on appeal, particularly when no clinically equivalent formulary alternative exists or when formulary alternatives have already failed or are contraindicated for your specific situation.

## Why This Denial Is Appealable

Under ACA §2719, plans must provide internal appeals followed by independent external review. Under ERISA §503, employer-sponsored plans must provide a full-and-fair review. You typically have approximately 180 days from the denial notice to initiate your internal appeal. External review must be requested within four months of the final internal denial. Expedited review (72-hour turnaround) is available when a delay would seriously jeopardize your health.

Separately, the ACA requires plans to have a formulary exception process. You may request a formulary exception — distinct from the standard appeal — on the basis that no formulary alternative is adequate for your medical condition. These two pathways can run in parallel.

## The Appeal Process

1. Identify the formulary alternatives Humana would cover for CGM. Request this list in writing from Humana. 2. Establish why those alternatives are inadequate — either because they have already been tried and failed, or because your physician can document a clinical reason they are not appropriate for your case. 3. File a formulary exception request and a simultaneous Level 1 internal appeal with your full clinical package. 4. Escalate to external review if internal levels are exhausted.

## Documentation to Gather

• Diagnosis and treatment regimen: Confirmed diabetes diagnosis, current medications, and insulin or non-insulin management plan.
• Trial-and-failure history: Dates and outcomes of any alternative CGM or monitoring approach that Humana lists as preferred, if previously used.
• Prescriber comparative letter: Your physician should explain why the Dexcom system specifically — rather than a formulary alternative — is necessary, referencing clinical features relevant to your case without asserting general clinical facts as universal truths.
• Dexcom prescribing information: Attach the FDA-approved labeling to anchor the device's approved indications.

## Criteria-Mapping Structure

Obtain Humana's formulary exception criteria from the plan documents or by calling member services. List each criterion, then document the specific chart evidence that satisfies it. If Humana's denial letter cited a formulary alternative, address that alternative directly: for each one, either show that it was tried (with date and outcome) or that your prescriber has documented a clinical reason it is not appropriate for your individual case.