Pulmonary function testing has come into widespread use since the 1970s. This has been facilitated by several developments. Because of miniaturization and advances in computer technology, microprocessor devices have become portable and automated with fewer moving parts.
You will pay Part B premiums as long as you keep the card. Those who are not automatically enrolled in Part B can sign up during their initial Medicare enrollment period which begins three months before their 65th birthday and ends three months after the 65th birthday.
Medicare will start 3 months after you sign up. After that time*, you can usually only apply during the General Election Period (1/1-3/31) *If you have a qualifying event to enroll in Part B after 65, you will be able to start Medicare right away, and not have to wait until the General Election Period.