Cgm Dexcom denied as non-formulary by UnitedHealthcare?

UnitedHealthcare'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 UnitedHealthcare Denies Dexcom CGM as Non-Formulary

UnitedHealthcare's formulary (preferred drug and device list) may not include the Dexcom CGM system at a covered tier for your specific plan, or may place it at a tier that results in a denial of benefits. A non-formulary denial means the plan's pharmacy or durable medical equipment benefit structure does not automatically cover this device — it does not mean the device is clinically inappropriate. UHC is required to have a formulary exception process, and non-formulary denials are overturned at meaningful rates when no adequate formulary alternative exists or when formulary alternatives have been tried and failed.

## Why This Denial Is Appealable

ACA §2719 requires non-grandfathered plans to provide internal appeals and independent external review. ERISA §503 requires full-and-fair review for employer-sponsored plans. You have approximately 180 days from the denial to file a first internal appeal and approximately four months from the final internal denial to request external review. Expedited review is available when delay would seriously jeopardize your health.

Separately, federal regulations require health plans to maintain a formulary exception process. A formulary exception — which you may file simultaneously with your internal appeal — asks UHC to cover the Dexcom system as if it were formulary, based on the clinical inadequacy of covered alternatives for your individual case.

## The Appeal Process

1. Identify what UHC would cover instead. Request the list of covered CGM devices or glucose monitoring alternatives under your plan. 2. Evaluate whether those alternatives are clinically adequate for your case. If they have been tried and failed, or if your prescriber can document a clinical reason they are not appropriate for you, that is the foundation of both the exception request and the appeal. 3. File a formulary exception request and a Level 1 internal appeal simultaneously. 4. Escalate to Level 2 and then external review if earlier levels are upheld.

## Documentation to Gather

• Formulary alternative analysis: Documentation of any covered alternative that was tried, with dates and clinical outcomes, or a prescriber explanation of why covered alternatives are clinically inadequate for your specific situation.
• Prescriber comparative letter: Your physician should explain what clinical features of the Dexcom system are necessary for your management and why a formulary alternative does not provide them, without asserting general clinical facts as universally true.
• Diagnosis and clinical complexity documentation: Chart notes establishing the diagnosis and clinical circumstances underlying the prescription.
• Dexcom FDA labeling: Anchor the appeal to the approved indication.

## Criteria-Mapping Structure

Obtain UHC's formulary exception criteria from the plan's Evidence of Coverage or by calling member services. Build a two-column table mapping each exception criterion to the specific clinical documentation that satisfies it. Address the formulary alternative directly: for each alternative UHC would cover, provide a specific clinical reason — with chart support — why that alternative is not adequate for this patient. A well-documented formulary exception appeal leaves the reviewer with no unanswered question.