Final answer:
Medicare will pay for items or services based on CMS policies, which are determined by the Centers for Medicare and Medicaid Services. Medicare has two parts: Part A and Part B, which cover different types of services. Medicare will only pay for items or services that are medically necessary and meet the criteria set by CMS policies.
Step-by-step explanation:
Medicare will pay for items or services based on CMS policies. Medicare has two parts: Part A, which pays for some hospital charges for individuals who are eligible for Social Security benefits, and Part B, which covers outpatient services. Medicare will pay for items or services that are deemed medically necessary and meet the criteria set forth by CMS policies.