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.
1 You have a seven-month initial period to enroll in Medicare Part B. The seven months include the three months prior to your 65th birthday, the month containing your 65th birthday and the three months that follow your birthday month.