Cgm Dexcom denied as not medically necessary 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 on Medical-Necessity Grounds

Humana's medical-necessity review for continuous glucose monitoring (CGM) devices such as the Dexcom system evaluates whether the clinical record establishes that the device is required to safely manage your diabetes — not merely convenient. Denials on this basis typically mean a reviewer concluded that the submitted documentation did not clearly demonstrate a level of glycemic instability, hypoglycemia unawareness, or management complexity that rises above what conventional fingerstick monitoring can address. This is a documentation gap, not a clinical verdict, and it is routinely overturned on appeal when the record is organized correctly.

## Why This Denial Is Appealable

Federal law gives you a structured right to challenge this decision. Under ACA §2719 and its implementing regulations, non-grandfathered individual and group health plans must provide at least two internal appeal levels followed by access to independent external review. ERISA §503 requires employer-sponsored plans to afford a full-and-fair review of every adverse benefit determination. You generally have approximately 180 days from the denial notice to file your first internal appeal, and external review must be requested within four months of the final internal denial. An expedited (72-hour) external review is available when your health could be seriously jeopardized by the standard timeline.

## The Appeal Process

1. Request the denial rationale in writing. Humana must provide the specific clinical criteria applied. Obtain this before drafting your appeal. 2. File a Level 1 internal appeal with a complete clinical package (see below). Humana is required to decide within 30 days for pre-service or 60 days for post-service appeals. 3. File a Level 2 internal appeal if Level 1 is upheld. 4. Request independent external review through the applicable state external-review organization or the federal process if your plan is self-funded.

## Documentation to Gather

• Diagnosis confirmation: Current diagnosis codes, most recent HbA1c results, and clinical notes confirming diabetes type and treatment regimen.
• Prior monitoring history: Dates and results of conventional fingerstick monitoring, with any documented episodes of severe hypoglycemia, hypoglycemia unawareness, or nocturnal lows.
• Clinical severity: Chart documentation of glycemic variability, emergency visits, or hospitalizations attributable to glycemic events.
• Prescriber letter of medical necessity: Your physician should explain, in plain language, why CGM is required for safe management — not merely preferred — and reference the applicable professional society guideline (e.g., the ADA Standards of Medical Care in Diabetes) without stating specific numeric thresholds from it.

## Criteria-Mapping Structure

Obtain the exact coverage criteria from Humana's published medical policy for CGM (request it directly from Humana if it is not publicly posted). Then build a table: list each criterion Humana states, and opposite each criterion write the specific chart entry — date, clinician, finding — that satisfies it. This one-to-one mapping is the most persuasive element of a medical-necessity appeal. Do not rely on general narrative; reviewers respond to explicit documentation of criteria met.