Does Insurance Cover Keytruda?
Most commercial insurance plans, Medicare Part B, and Medicaid cover Keytruda (pembrolizumab) for FDA-approved indications like melanoma, lung cancer, and head/neck cancers, often at 80-100% after deductibles.[1][2] Coverage requires prior authorization and proof of medical necessity, with denials possible for off-label use.
Medicare Coverage Details
Medicare Part B covers Keytruda infusions in outpatient settings, paying about 80% of the Medicare-approved amount after the Part B deductible ($240 in 2024). Part D may cover oral supportive meds but not the infusion itself. Supplemental Medigap plans can reduce out-of-pocket costs to near zero.[1][3]
Commercial and Employer Insurance
Private insurers like UnitedHealthcare, Blue Cross Blue Shield, and Aetna typically cover Keytruda if it's on their formulary and meets step therapy rules (e.g., trying cheaper alternatives first). Copays range from $0-$500 per infusion; high-cost plans may cap annual out-of-pocket at $9,450 for 2024.[2][4] Check your plan's PA criteria via the insurer's portal.
Patient Assistance if Insurance Denies or Gaps Exist
Merck's patient support program covers copays up to $25,000/year for eligible commercially insured patients (income under $100K single/$200K household). Uninsured or underinsured qualify for free drug via the Merck Patient Assistance Program.[5] Non-profits like PAN Foundation offer grants for deductibles.
Average Costs Without Full Coverage
One Keytruda vial costs $11,000-$12,000 wholesale; a 3-week cycle runs $33,000+. Patients pay $1,000-$10,000/year out-of-pocket depending on insurance tier.[6] Biosimilars aren't available yet due to patents expiring in 2028 (U.S. exclusivity).[7]
How to Verify Your Coverage
Call your insurer or use Merck's Benefits Verification tool online. Provide diagnosis code, prior treatments, and Keytruda's NDC (e.g., 74177-053). Appeals succeed 50-70% of the time for denials.[2][5]
Sources
[1]: CMS Medicare Coverage for Pembrolizumab
[2]: Keytruda HCP Coverage Info
[3]: Medicare.gov Drug Coverage
[4]: GoodRx Keytruda Pricing
[5]: Merck Access Program
[6]: Drugs.com Keytruda Cost
[7]: DrugPatentWatch Keytruda Patents