Proton therapy and Medicare: confirm the applicable coverage policy

Medicare may cover proton beam therapy when the proposed service meets the applicable medical-necessity and coverage rules. It is not automatically covered for every cancer, stage or treatment plan. A center's technology or a patient's preference does not by itself establish payment.

Check the policy for your location and indication

For example, current Local Coverage Determination L35075 describes proton therapy coverage within its contractor jurisdictions and includes requirements for selected conditions. For prostate cancer, it addresses disease characteristics, patient selection documentation and discussion of treatment choices. This is not a rule that every person with prostate cancer qualifies.

A local coverage determination does not automatically apply nationwide. Ask the radiation oncology billing team which current policy governs your location and the date of service. Medicare Advantage members should also confirm the plan's authorization and provider process.

What the office should document

Before traveling to a center

Confirm the facility and physician participation, written coverage response when available, expected patient cost and any services outside the proposal. Travel, lodging and optional arrangements should not be assumed to be part of a radiation benefit.

If denied, request the specific reason and appeal instructions. The treating team may need to provide missing records or explain the clinical indication. This guide does not claim proton therapy is superior to another approach or recommend it for an individual patient.

Related coverage questions

• Medicare Surgery Coverage: Inpatient, Outpatient and Your Costs
• Original Medicare: What Parts A and B Cover and How You Pay
• A Medicare Medical Claim Was Denied: What to Do Next

Official sources

• CMS: proton beam therapy LCD L35075
• Radiation therapy
• Medicare.gov: cancer treatment coverage
• Medicare Advantage & other health plans