I live outside the United States, and I don't have Part B. If I get Part B, will I pay more?
In some cases, you may have to pay a higher premium. It will depend on your situation. Listed below are 3 possible situations:
You're over 65, currently getting Social Security retirement benefits and Part A, and you didn't take Part B when you were first eligible. You may only apply for Part B from January 1–March 31 each year, and you may have to pay higher premiums.
If you're over 65, and are eligible for Social Security benefits, you may file an application for monthly benefits and Part A.You'll have to file for Part B from January 1–March 31 and you may have to pay higher premiums.
If you're a U.S. citizen, over 65, not eligible for Social Security benefits, and you lived in a foreign country when you turned 65, you must live in the U.S. to file for Part B. You're first eligible to enroll in Part B the month you return to the U.S. to establish your new residence. You won't have to pay a higher premium if you enroll in Part B within 3 months of when you first return to the U.S.