Dexa Scan denied as duplicate or overlapping therapy 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 as Duplicate Therapy

Medicare's duplicate-therapy denial means the claims system found a prior bone density study on file — either a DEXA scan billed earlier in the same coverage period or a comparable densitometry service — and flagged the new order as redundant. This is frequently a billing or timing error rather than a genuine clinical disagreement, and it is almost always appealable.

## Why This Denial Is Appealable

Medicare's own coverage rules allow repeat bone density measurement when a clinically meaningful interval has passed since the last study, when the patient's clinical status has materially changed, or when a prior result was technically inadequate. If the denial rests on a phantom prior claim, a corrected-claim submission may resolve it before a formal appeal is even necessary. If the clinical timing or indication is at issue, the full appeal pathway is available.

## Federal Appeal Framework

• ERISA / ACA protections do not apply to traditional Medicare (Parts A and B) directly, but Medicare has its own multi-level administrative appeal process with equivalent protections.
• Medicare appeal levels: Redetermination (contractor, 60-day filing window) → Reconsideration (Qualified Independent Contractor, 180 days) → ALJ Hearing (Office of Medicare Hearings and Appeals, 60 days after QIC decision) → Medicare Appeals Council → Federal District Court.
• Expedited review is available when standard timing would seriously jeopardize health.
• File your Redetermination within 120 days of the denial notice to preserve all levels.

## Concrete Appeal Steps

1. Obtain the Medicare Summary Notice or Explanation of Benefits and identify the prior claim Medicare believes duplicates this scan. 2. Pull the imaging record for that prior study — confirm whether it actually exists, whether it was technically adequate, and when it was performed. 3. If no prior study exists, work with the ordering provider to submit a corrected claim with documentation that no prior study is on file. 4. If a prior study does exist, document the interval since that study and any clinical change (new fracture, new medication affecting bone density, change in clinical risk category) that justifies re-measurement. 5. Obtain a signed medical-necessity letter from the ordering provider explaining why a new study is needed now and why the prior result does not answer the current clinical question.

## Documentation Checklist

• Ordering provider's medical-necessity letter with clinical rationale
• Relevant clinical notes showing diagnosis, risk factors, and any interval clinical change
• Record of prior bone density study (date, facility, result, technical adequacy notation if applicable)
• Any medication history relevant to bone health (with start/change dates)
• The specific Medicare Local or National Coverage Determination the contractor cited; obtain the full text from cms.gov and map your patient's facts to each requirement

## Criteria-Mapping Structure

Pull the exact coverage criteria from Medicare's applicable National or Local Coverage Determination (available at cms.gov/medicare-coverage-database). For each requirement listed, write the corresponding fact from your patient's chart. This side-by-side mapping is the single most effective element of a successful Medicare appeal.