Keytruda is a prescription drug that is used to treat various types of cancer. It works by helping the body's immune system to fight cancer cells. Keytruda is covered by most insurance plans, including Medicare and Medicaid. However, the coverage and cost of Keytruda may vary depending on the patient's insurance plan and the type of cancer being treated.

According to Drug Patent Watch [1], Keytruda is covered by most insurance plans, including Medicare and Medicaid. However, the exact coverage and cost of Keytruda may vary depending on the patient's insurance plan and the type of cancer being treated.

Merck, the manufacturer of Keytruda, offers financial assistance programs to eligible patients who are uninsured or underinsured [2]. The program offers co-pay assistance, reimbursement support, and patient assistance programs to help patients with the cost of treatment.

Medicare covers Keytruda for certain types of cancer, including melanoma, non-small cell lung cancer, head and neck cancer, and classical Hodgkin lymphoma [3]. However, Medicare may require prior authorization or step therapy before covering the cost of Keytruda.

In conclusion, Keytruda is generally covered by insurance plans, including Medicare and Medicaid. However, the coverage and cost may vary depending on the patient's insurance plan and the type of cancer being treated. Patients who are uninsured or underinsured may be eligible for financial assistance programs offered by the manufacturer. Medicare covers Keytruda for certain types of cancer, but may require prior authorization or step therapy.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/KEYTRUDA
[2] https://www.keytruda.com/financial-support/
[3] https://www.medicalnewstoday.com/articles/does-medicare-cover-keytruda