Quick answer: Yes, in many cases you can apply for U.S. health insurance before you have a Social Security number. Official guidance says applicants give an SSN if they have one. What decides eligibility is your immigration status, not the SSN. People without lawful status cannot use the Marketplace but have other options.
Can I get health insurance in the USA without an SSN?
This is the core question in health insurance for immigrants and newcomers. Often yes, if you are lawfully present. CMS training material says people applying for coverage must give an SSN only if they have one, and that many noncitizens do. One state marketplace, Maryland Health Connection, states that you do not need an SSN or an ITIN to apply, although you will be asked for an SSN if you request financial help and file taxes. Rules on forms differ between HealthCare.gov and state sites, so follow the exact wording of the application you use.
Do I need an SSN for the ACA Marketplace?
Not to apply, if you do not have one, but status matters a lot. HealthCare.gov lists the immigration statuses that may qualify, including workers' visas such as H-1B and student visas. If you are lawfully present, the Marketplace may be open to you even while your SSN is pending. Newcomers who arrived from abroad may also qualify for a Special Enrollment Period, see our ACA and visa guide.
What if I only have an ITIN?
An ITIN is a tax number, not proof of immigration status. Maryland Health Connection says an ITIN is not required to apply. Some websites say to type an ITIN into the SSN field of the application. We could not confirm that from an official source, so do not do it unless the application itself instructs you to. Ask a broker or an application assister to check the form with you.
Who cannot use the Marketplace?
HealthCare.gov says undocumented immigrants cannot get Marketplace coverage, though they may apply on behalf of family members who are eligible. In a mixed-status household, CMS explains that only the people applying for coverage need to provide status information. For people who are not lawfully present, CMS lists these options: emergency Medicaid for an emergency medical condition, private coverage outside the Marketplace at full price, and free or low-cost care at community health centers.
What are my options when I am lawfully present but have no SSN yet?
| Situation | Options to look at |
|---|---|
| Work or student visa, SSN pending | Employer plan if offered; Marketplace plan; private plan sold outside the Marketplace |
| Green card holder, SSN pending | Marketplace; Medicaid has a five-year wait for many green card holders (CMS) |
| Not lawfully present | Private coverage outside the Marketplace at full price; community health centers; emergency Medicaid |
Our no SSN or pending status page explains how YesOuiCare handles passport-based applications.
Will a hospital treat me without insurance?
In an emergency, yes. HealthCare.gov says the closest hospital that can help will treat you whether or not you have insurance. The bill still exists, so ask about payment options and a written estimate for planned care. For uninsured patients, a good faith estimate must be provided under the No Surprises Act, per CMS.
Is my information shared with immigration authorities?
Maryland Health Connection states that the personal information on an application will not affect your current immigration status and that you cannot be deported for using health benefits. It is one state's statement, so ask the program you apply through how it uses your data.
Does health insurance affect my green card application?
It may, depending on the type of help you receive. Maryland Health Connection says that starting September 18, 2026, enrolling in Medicaid or a private plan with financial help may affect a future green card application under public charge rules, and that a private plan without financial help will not. This comes from a state marketplace page, not a federal one. Speak to an immigration attorney before you choose.
What changes in 2027 for visa holders?
Under Public Law 119-21, section 71301, premium tax credits will be limited to lawful permanent residents, Cuban and Haitian entrants and Compact of Free Association migrants for taxable years beginning after December 31, 2026. Many visa holders can still buy a plan but without that tax credit. Details are in our 2027 visa guide.
Key facts
- The SSN is provided if you have one; eligibility turns on immigration status (CMS).
- Undocumented immigrants cannot get Marketplace coverage (HealthCare.gov).
- Emergency care is available regardless of insurance (HealthCare.gov).
- Only applicants share status information in a mixed-status household (CMS).
- If citizenship or immigration data does not match, you generally have 95 days to send documents (CMS, Aug. 2024).
- SSN and ITIN wording differs by marketplace; follow the form you use.
Frequently asked questions
Can I get insurance without an SSN?
Often yes when you are lawfully present. Provide an SSN if you have one; if not, apply with your immigration documents. Financial help and tax filing can require an SSN later.
Do I need an SSN for the ACA Marketplace?
Not to start an application in the sources we reviewed. Tax-credit questions are different, and they matter more from 2027 for visa holders.
Can undocumented immigrants get coverage?
Not through the Marketplace. CMS lists emergency Medicaid, private coverage at full price and community health centers as possible routes.
Is my information shared with immigration?
One state marketplace says application data does not affect current status. Ask the program you apply through for its privacy policy.
Can immigrants on a work visa buy health insurance in the US?
Yes. HealthCare.gov lists workers' visas such as H-1B among statuses that may qualify to buy a Marketplace plan. Subsidies change in 2027.
Can I get health insurance as soon as I arrive in the US?
You can apply once you have the documents, but the start date depends on the plan and the enrollment window. Arriving from abroad can open a 60-day Special Enrollment Period.
Will a US hospital treat me without insurance?
In an emergency, yes, per HealthCare.gov. You may still receive a bill.
Does having private health insurance affect my green card application?
A state marketplace says a private plan without financial help will not, while help may. Confirm with an immigration attorney.
Sources
- HealthCare.gov, health coverage for immigrants: https://www.healthcare.gov/immigrants/
- HealthCare.gov, immigration statuses that may qualify: https://www.healthcare.gov/immigrants/immigration-status/
- HealthCare.gov, getting emergency care: https://www.healthcare.gov/using-marketplace-coverage/getting-emergency-care/
- HealthCare.gov, Special Enrollment Periods: https://www.healthcare.gov/coverage-outside-open-enrollment/special-enrollment-period/
- CMS, immigrant eligibility for Marketplace, Medicaid and CHIP (Aug. 2024 deck, before the 2027 changes): https://www.cms.gov/marketplace/technical-assistance-resources/immigrant-eligibility-marketplace-medicaid-chip.pdf
- Maryland Health Connection, immigrant families (example of a state marketplace): https://www.marylandhealthconnection.gov/health-coverage/immigrant-families/
- Public Law 119-21 (H.R. 1), official text, GovInfo: https://www.govinfo.gov/content/pkg/PLAW-119publ21/html/PLAW-119publ21.htm
- CMS, No Surprises Act fact sheet: https://www.cms.gov/newsroom/fact-sheets/no-surprises-understand-your-rights-against-surprise-medical-bills
Get a quote
Want help comparing your options in English or French? Request a quote or message Charlyne on WhatsApp. This article is general information, not personal advice; plans, prices and eligibility vary by state, insurer, immigration status and year.