Medicare covers charges related to inpatient procedures such as knee replacements and time spent in the hospital at 100 percent after a patient reaches his deductible, according to Healthline. In 2015, the Medicare Part A deductible is $1,260 for each benefit period with zero coinsurance for the first 60 days of the benefit period, states Medicare.gov.
Medicare considers a benefit period to begin when a patient is admitted to the hospital or skilled nursing facility and considers a benefit period to end when a patient has received no care as an inpatient for 60 straight days, according to Medicare.gov. After a knee replacement, patients usually have to stay in the hospital for as many as five days, states WebMD.
In the United States, total knee replacements cost nearly $50,000 on average, notes Healthline. Partial replacements cost less because they tend to require a shorter hospital stay and less followup care and recovery. In a knee replacement, the damaged knee joint is removed from the bone, which is then shaped for the artificial replacement joint, according to WebMD. Patients are put under anesthesia during the procedure.
Before a knee replacement, patients typically require lab work and office visits, according to Healthline. Medicare covers 80 percent of these sorts of outpatient expenses. After knee replacement, patients may undergo physical therapy to regain full use of their knee, notes WebMD. While patients can typically stand on their new knees within a day of surgery, it can take about six weeks for patients to have the full use of their new knees.