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.
To sign up for Part B, complete an Application for Enrollment in Part B (CMS-40B). Get this form and instructions in Spanish. If you don't have Medicare or you want to sign up for Part A (some people have to pay a premium for Part A), contact Social Security.