Proton Therapy denied for missing prior authorization by Aetna?

Aetna's specific coverage criteria for proton therapy 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 Requires Prior Authorization for Proton Therapy — and How to Navigate It

A prior-authorization-required denial for proton beam radiation therapy means that Aetna requires advance approval before the service is rendered, and either that authorization was not obtained, or an authorization request was submitted but denied pending additional clinical documentation. This is distinct from a clinical-coverage denial — it is a procedural requirement — but it carries the same practical consequence of blocking your treatment.

If authorization was denied on clinical grounds after submission, the underlying denial reason (medical necessity, experimental, etc.) governs your appeal strategy. If authorization was simply not obtained in advance, your appeal will focus on the procedural posture — retroactive authorization, urgent-care exception, or a prospective resubmission with complete documentation.

## Federal Appeal Rights

• Internal appeal (ACA §2719 / ERISA §503): You have the right to appeal any adverse benefit determination, including prior-authorization denials. File in writing within the timeframe in your denial letter.
• External review (ACA §2719): If the prior-authorization denial involves a medical-judgment component (i.e., clinical criteria not met), independent external review is available after the internal appeal, generally within four months of the final internal denial.
• Expedited / urgent-care review: If the treatment is urgently needed, request concurrent or expedited authorization review — Aetna must respond within a shortened timeframe for urgent requests. Expedited external review is also available for urgent situations.
• Retroactive authorization: If treatment was already rendered due to an urgent clinical situation, submit a retroactive authorization request with full clinical documentation.

## Documentation to Gather

• Radiation oncologist's prior-authorization letter: A comprehensive medical-necessity letter addressing each of Aetna's prior-authorization criteria for proton therapy — diagnosis, clinical indication, dosimetric rationale, and why conventional radiation is not equivalent for your case.
• Dosimetric treatment plan: A radiation treatment plan comparing proton therapy to conventional alternatives, demonstrating the organ-sparing advantage for your specific anatomy.
• Diagnostic and staging documentation: Current imaging, pathology, and staging records confirming the clinical indication.
• Tumor board or multidisciplinary recommendation: If available, include the formal recommendation from your cancer care team.
• Authorization request records: Copies of any prior authorization submissions, correspondence, and Aetna's responses — to document the procedural history.

## Criteria-Mapping Structure

Obtain Aetna's current prior-authorization criteria for proton beam radiation therapy. List each required element and document your evidence:

| Prior-Auth Requirement | Your Documentation | |---|---| | Confirmed diagnosis and staging | Pathology, imaging, staging records | | Indication listed in policy | Prescriber's letter; policy reference | | Dosimetric justification | Treatment plan comparison / DVH | | Ordering provider specialty | Radiation oncologist credentials / referral | | Facility qualification | Proton center credentials / accreditation |

Confirm the exact prior-authorization criteria in Aetna's current published policy — criteria are updated periodically and the version in effect at the time of your request governs.