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.
In most cases, itâs best to enroll in Medicare Part B when youâre first eligible so you avoid paying a Part B late enrollment penalty. However, if you or your spouse are working and have group health insurance through an employer or union, you could decide to delay Part B, even after you turn 65.