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.
Your Medigap rights may depend on when you enroll in Medicare Part B. If you are at least 65 years old, your Medigap open enrollment begins when you enroll in Medicare Part B. It is typically better to enroll when you are first eligible for Part B so you avoid a Part B late enrollment penalty.