Inpatient care in hospitals (such as critical access hospitals, inpatient rehabilitation facilities, and long-term care hospitals)  Inpatient care in a skilled nursing facility (not custodial or long-term care)  Hospice care services  Home health care services  Inpatient care in a Religious Nonmedical Health Care Institution

You usually don't pay a monthly premium for Part A coverage if you or your spouse paid Medicare taxes while working. This is called "premium-free Part A." If you aren't eligible for premium-free Part A, you may be able to buy Part A if you meet one of these conditions:

• You're 65 or older, you're entitled to (or enrolling in) Part B, and you meet the citizenship or residency requirements. 
• You're under 65, disabled, and your premium-free Part A coverage ended because you returned to work.