A lawful permanent resident who received a green card six years ago and turns 65 next spring does not lose Medicare access under the citizenship rule CMS added to the 2027 Medicare & You handbook. The requirement narrows who can sign up, but it does not eliminate every noncitizen category — the handbook states that a U.S. citizen or national, a lawful permanent resident, a Cuban-Haitian entrant, or a Compact of Free Association migrant lawfully living in the United States can still enroll. For enrollees who are not citizens by birth, the question is no longer whether the new rule applies, but whether their specific status appears on that four-item list.
The Four Categories Named in CMS’s 2027 Handbook
CMS states the qualifying test directly in the plan-summary table of the 2027 handbook, spelling out four categories rather than a single citizenship-only bar. The language covers Original Medicare enrollment as well as any Medicare Advantage or Part D plan a person might otherwise choose, tying private coverage to the same underlying status check CMS applies to Part A and Part B enrollment.
The exact text reads that a person must be “either a U.S. citizen or U.S. national, a lawful permanent resident (green card holder), a Cuban-Haitian entrant, or lawfully living in the U.S. as a Compact of Free Association (COFA) migrant” to get Part A and Part B benefits or join a Medicare health or drug plan. Four categories, not one, is the operative detail — citizenship by birth is sufficient, but it is not the only route CMS recognizes for lawful enrollment.
The same sentence governs private coverage, not just Original Medicare. A Medicare Advantage insurer or a stand-alone Part D drug plan cannot enroll an applicant whose citizenship or immigration status falls outside the four listed categories, even when that applicant can otherwise afford the premium. That single-sentence test is now the gate for every path into the program, public or private.
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COFA Migrant and Cuban-Haitian Entrant Are Specific Legal Statuses
A COFA migrant is not simply a Pacific Islander with a work visa. The term describes a citizen of the Marshall Islands, the Federated States of Micronesia or Palau — the three nations covered by Compacts of Free Association with the United States — who is authorized to live, work and study in any U.S. state or territory as a lawfully present non-citizen without holding a separate visa category. CMS guidance puts that population above 94,000 people nationwide, concentrated in a small number of states and territories.
Cuban-Haitian entrant carries an equally specific meaning. It is a formal immigration classification — distinct from asylee, refugee, parolee or Temporary Protected Status — that CMS has long listed among the handful of statuses qualifying people for federal coverage programs, including Medicaid, CHIP and Marketplace plans, before the 2027 handbook folded it into the narrower Medicare-specific list. The category does not extend to every Cuban or Haitian national who has entered the country; it applies only to people who hold that particular status designation.
Meeting one of the four category names is necessary but not sufficient. The handbook and the CMS guidance behind it both attach additional conditions inside each category — most consequentially, how long a person must have held the status and how it is documented — before Medicare treats an application as complete. Those conditions determine not just eligibility in principle but which specific Medicare benefit, and at what cost, a given applicant actually receives.
The Residency and Work-Credit Rules Inside Each Category
For a lawful permanent resident, status alone does not guarantee premium-free Part A. A green card holder qualifies for premium-free Part A the same way a citizen does — by accumulating 40 quarters of Social Security-taxed work, roughly ten years, through personal earnings or a spouse’s work record. A green card holder who has not reached that threshold can still enroll by paying a monthly premium for Part A, but only after meeting a separate five-year continuous-residency requirement that applies specifically to Part B for lawfully admitted permanent residents.
COFA migrants and Cuban-Haitian entrants who meet the 40-quarter work-credit threshold qualify for the same premium-free Part A a citizen receives; those who do not can still purchase Part A and enroll in Part B once they clear the same residency and enrollment windows that apply to any other qualifying immigrant. Both groups also remain eligible for Medicare Savings Programs, which can cover Part A and Part B premiums, deductibles and coinsurance for enrollees whose income and resources fall under state-set limits, and for the Part D Extra Help subsidy on prescription costs.
The distinction that matters going into 2027 is between the category test and the entitlement test. CMS’s new language decides who is even permitted to apply under one of the four statuses; it does not by itself decide whether an applicant receives Medicare free, at a premium, or only after a waiting period. A COFA migrant with decades of U.S. payroll-tax work and a Cuban-Haitian entrant who arrived more recently can both clear the category test yet land on very different bills once the work-credit and residency rules are applied.
What the record does not yet show is how the category rule interacts with next year’s costs. CMS’s own handbook states that 2027 premium amounts, drug costs and income limits were not finalized at the time of printing, so a Cuban-Haitian entrant or COFA migrant who confirms category eligibility now still cannot look up the exact premium, deductible or Extra Help threshold that will apply to a 2027 enrollment — only that the four-category test, once cleared, opens the same enrollment process every other qualifying applicant uses.
This article was produced with AI assistance and reviewed by The Money Overview editorial team.
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