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.
People eligible for Part A are also eligible for Part B. Medicare Part B is voluntary, but more than 90 percent of beneficiaries with Part A are also enrolled in Part B. For most individuals who become entitled to Part A, enrollment in Part B is automatic unless the individual declines enrollment.