Cgm Dexcom denied for missing prior authorization by Aetna?

Aetna'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 Aetna Denied Your Dexcom CGM: Prior Authorization Required

A "prior authorization required" denial does not mean Aetna has decided your CGM is not covered — it means your claim or order was submitted without first obtaining the plan's advance approval. This is a process denial, not a clinical one, and it is resolved differently than a medical-necessity denial. However, if a claim was already denied for lack of prior auth, you may still be able to recover coverage retroactively or get authorization going forward.

Aetna requires prior authorization for CGM devices because the plan wants to verify that coverage criteria are met before the device is dispensed. The authorization process itself is not a denial of coverage — it is a gate that must be cleared.

## Immediate Next Steps

1. If no device has been dispensed yet: Submit a prior-authorization request immediately through your prescriber's office. Your prescriber initiates the PA with the clinical documentation Aetna requires. 2. If you already received the device and the claim was denied: You may submit a retroactive PA request or an internal appeal arguing that the denial should be overturned because the clinical criteria are met. Retroactive approval is available in some circumstances, particularly if the need was urgent or the PA requirement was not clearly communicated.

## Your Federal Appeal Rights

• Internal appeal: File within the deadline on your denial notice. Aetna must decide within 30 days (standard) or 72 hours (urgent/expedited).
• External review (ACA §2719 / ERISA §503): After a final internal appeal denial, you may seek independent external review — typically within approximately four months. The IRO decision is binding.
• Expedited review: Available if your condition is urgent and delay would jeopardize your health.

## Documentation to Gather for the PA or Appeal

1. Prescriber letter of medical necessity: Your physician should document your diagnosis, current treatment regimen, and the clinical rationale for CGM in your specific case. 2. Diagnosis and treatment records: Chart notes, medication list, and ICD codes. 3. Clinical indicators: Any notes documenting hypoglycemic episodes, glucose variability, or other factors your prescriber considers clinically relevant. 4. Applicable guideline reference: Your prescriber should reference the relevant professional society guideline organization (e.g., American Diabetes Association) supporting CGM for your profile. 5. Aetna's PA criteria: Obtain Aetna's current CGM prior-authorization criteria from the website or member services and ensure each criterion is addressed in the submission.

## Criteria-Mapping Structure

For the PA submission or appeal, list every Aetna PA criterion verbatim and respond to each one with the corresponding chart fact. This structure shows the reviewer that every requirement is satisfied and eliminates the most common reason for PA denials: incomplete documentation.

PA denials are among the most correctable — the clinical coverage may be fully available once the process hurdle is cleared.