Mosunetuzumab

Medicare

Part B (clinician-administered)

Given by infusion or injection in a clinic or hospital outpatient department, so it is a Part B drug: Medicare pays 80% after the Part B deductible and the patient owes 20% coinsurance, uncapped in Original Medicare unless a Medigap policy applies. Step-up dosing is often started in hospital (Part A) because of cytokine release syndrome monitoring, then continued in the outpatient setting.

Commercial insurance

covered with prior authorisation

Covered under the medical benefit with prior authorisation confirming diagnosis, biomarker status and line of therapy; site-of-care policies may steer infusions away from hospital outpatient departments.

Assistance programmes

• Genentech Access Solutions
• Genentech Patient Foundation — Free medicine for eligible patients regardless of insurance type.
• PAN Foundation — Disease-specific co-pay and premium funds; open and closed funds change monthly.
• HealthWell Foundation
• CancerCare Co-Payment Assistance Foundation
• Patient Advocate Foundation Co-Pay Relief
• Leukemia & Lymphoma Society financial support

20% Part B coinsurance on a high-cost infusion adds up quickly: Medigap Plan G or N, Medicare Advantage maximum out-of-pocket, Medicaid dual eligibility, or a charity fund are the usual buffers.

Sources: Medicare.gov: Chemotherapy · Medicare.gov: Prescription drugs (outpatient, Part B). Not medical or financial advice; verify with your plan.

Appraised for

Relapsed or refractory follicular lymphoma after 2 or more systemic treatments

Cancer Drugs Fund

Entered the Cancer Drugs Fund under a managed access agreement; check the current CDF list for whether it has since moved to routine commissioning.

NHS England

Routinely funded for the appraised indication (or via managed access)

Sources: NICE TA892 · NHS England Cancer Drugs Fund list · SMC advice: mosunetuzumab. Funding decisions are indication-specific and change monthly; verify with NICE and your treating team.