Dexa Scan denied as not medically necessary by Medicare?

Medicare's specific coverage criteria for dexa scan 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 Medicare Denies a DEXA Scan for Medical Necessity

Medicare's medical-necessity denial for a DEXA scan means the contractor reviewed the claim and determined that the documentation submitted did not establish that the scan was reasonable and necessary for the patient's diagnosis or treatment. This is the most common denial type for bone density studies and almost always comes down to documentation gaps rather than a genuine absence of clinical need.

## Why This Denial Is Appealable

Medicare's coverage of bone density measurement is established under statute and implementing Coverage Determinations. If your patient has a covered indication — such as a condition known to affect bone metabolism, a prior fracture, receipt of certain medications, or other qualifying clinical circumstance — and the chart documentation supports it, the denial can and should be reversed. The contractor is reviewing what was submitted, not the full chart. Submitting complete records almost always changes the outcome.

## Federal Appeal Framework

• Medicare Redetermination must be filed within 120 days of the denial notice (60 days recommended).
• If Redetermination is unfavorable, you have 180 days to request Reconsideration by a Qualified Independent Contractor.
• ALJ Hearing, Medicare Appeals Council, and Federal District Court follow if needed.
• Expedited review is available for urgent clinical situations.
• For Medicare Advantage, ACA §2719 external review by an Independent Review Organization applies.

## Concrete Appeal Steps

1. Obtain the denial notice and identify which medical-necessity criterion the contractor found unsupported. 2. Pull the applicable National Coverage Determination or Local Coverage Determination from cms.gov/medicare-coverage-database. 3. Review the patient's complete chart for documentation of the qualifying indication, clinical history, risk factors, and ordering rationale. 4. Request a detailed medical-necessity letter from the ordering provider that ties the clinical facts explicitly to the covered indication. 5. Compile all supporting records and submit them with the Redetermination request, including a cover letter that maps each required criterion to a specific chart finding.

## Documentation Checklist

• Complete ordering provider notes documenting the clinical indication
• Diagnosis confirmation (relevant labs, imaging, clinical assessment)
• Medication history with start dates for any drugs known to affect bone density
• Prior fracture history or fall-risk documentation if applicable
• Ordering provider's medical-necessity letter referencing the specific NCD/LCD indication
• Any specialist notes or referral letters supporting the order

## Criteria-Mapping Structure

Obtain the full text of the Medicare NCD or LCD that governs bone density measurement in your jurisdiction. For every listed covered indication and documentation requirement, write the corresponding fact from your patient's chart. Attach this mapping as a structured exhibit to the appeal letter. The reviewer should be able to confirm coverage without needing to search the chart — make it effortless for them.