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.
For Medicare Part B, you have from January 1 through March 31 to enroll. Coverage doesnât begin until July. What happens if you miss your initial enrollment window? If you delay Medicare Part B enrollment, then youâll have to wait to enroll when the general enrollment period starts. In this example, your birthday is March 8.