42 CFR §406.11

1. (a)Basis. Section 103 of the law that established the Medicare program in 1965 (Pub. L. 89-97) provided for eligibility for certain individuals who were age 65 or would soon attain age 65 but would not be able to qualify for social security or railroad retirement benefits.
2. (b)Requirements. Unless he or she is excluded under paragraph (c) of this section, an individual age 65 or over who does not meet the requirements of § 406.10 or § 406.15 (and who would not meet those requirements if he or she filed an application), is entitled to Medicare Part A benefits if he or she meets the following requirements:
   1. (1)Age and quarters of coverage.
      1. (i)He or she attained age 65 before 1968; or
      2. (ii)If he or she attained age 65 in 1968 or later, he or she must have at least 3 quarters of coverage for each year that elapsed after 1966 and before the year in which he or she attained age 65. (The quarters of coverage may have been acquired at any time, not necessarily during the elapsed years.)
   2. (2)Residence and citizenship. He or she is a resident of the United States and—
      1. (i)A citizen of the United States; or
      2. (ii)An alien lawfully admitted for permanent residence who has continuously resided in the United States for 5 years immediately preceding the first month in which he or she meets all other requirements for entitlement to hospital insurance.
   3. (3)Application. He or she has filed an application for Medicare Part A no earlier than the third month before the first month of eligibility.
3. (c)Bases for exclusion. An individual who meets the requirements of paragraph (b) of this section is excluded from Medicare Part A if he or she—
   1. (1)Has been convicted of spying, sabotage, or treason, sedition, and subversive action under chapter 37, 105, or 115 of title 18 of the United States Code;
   2. (2)Has been convicted of conspiracy to establish a dictatorship under section 4 of the Internal Security Act of 1950;
   3. (3)On February 16, 1965, was or could have been covered under the Federal Employees Health Benefits Act (FEHBA) of 1959; or
   4. (4)In his or her first month of eligibility;
      1. (i)Is covered by an enrollment under the FEHBA; or
      2. (ii)Could have been covered by an enrollment under that Act if he or she (or any other person who could provide him or her with coverage) was a Federal employee at any time after February 15, 1965, and had enrolled and retained coverage under that Act.
4. (d)End of exclusion. An individual excluded under paragraph (c)(3) or (4) of this section can become entitled beginning with the first month in which he or she loses the right to FEHBA coverage solely because he or she or the other person leaves Federal employment.
5. (e)Beginning and end of entitlement.
   1. (1)Entitlement begins—
      1. (i)In the first month of eligibility if the application is filed no later than 12 months after the first month of eligibility:
      2. (ii)In the 12th month before the month of application if the application is filed more than 12 months after the first month of eligibility.
   2. (2)Entitlement continues until death or until the month before the month in which the individual becomes entitled under § 406.10 or § 406.15.