"Nursing home" or "nursing facility" can refer to different levels of inpatient care in different types of places, including rest homes, nursing homes, board-and-care homes, assisted-living facilities, congregate living homes, and sheltered care homes. All of these provide what is called custodial care, which is long-term residence and nonmedical assistance with the activities of daily living -- such as bathing, eating, walking, and dressing -- for people who don't have acute medical conditions but who are no longer able to care for themselves completely. This type of custodial long-term care is not covered by Medicare.

At the other end of the spectrum is a much higher level of inpatient medical care, referred to as skilled nursing or rehabilitation care. Under certain circumstances, Medicare Part A covers this skilled care for a limited time while a patient is recovering from a serious illness, condition, or injury. This care is usually provided in the nursing-facility wing of a hospital, in a separate skilled nursing facility, or in the skilled nursing part of a "multilevel" nursing or rehabilitation facility.