Written by a parent, not a doctor. Nothing here is medical advice.

Federal, exists in every state

Get a new plan when your coverage changes

A qualifying coverage loss can let you buy health insurance through HealthCare.gov outside open enrollment.

What it is

A qualifying coverage loss can let you buy health insurance through HealthCare.gov outside open enrollment.

A coverage loss can open a limited enrollment window. A cancer diagnosis alone does not. HealthCare.gov checks the event and your expected yearly income. Your child’s hospital and medicines need to be covered by the exact plan you choose.

Eligibility rules
  • Most qualifying coverage losses allow enrollment during the 60 days before or after the loss. Losing Medicaid or CHIP allows 90 days afterward.
  • A Medicaid denial opens a window only under specific timing rules. Voluntarily cancelling coverage usually does not.
  • In 2026, federal premium tax credits generally require income from 100% through 400% of the poverty line. Enhanced credits ended December 31, 2025.
  • The monthly enrollment window for income at or below 150% of poverty is paused through plan year 2026.
What you get
  • A health plan that cannot exclude your child’s cancer as a pre-existing condition.
  • Help with premiums when the tax household meets the credit rules.
Costs and coverage
  • Premiums, deductibles and other costs depend on the plan. Premium tax-credit repayment caps are gone for 2026.
  • The special below-100%-of-poverty tax-credit exception for certain lawfully present immigrants ends for tax year 2026. The tax-year-2027 restriction to lawful permanent residents, Cuban/Haitian entrants and COFA migrants concerns credit eligibility for affected noncitizens, not U.S. citizens or nationals and not the entire right to buy a Marketplace plan. An enrollment specialist should check the family’s particular status and the rules for the coverage year.
If you decide to apply
  1. If you decide to compare plans, ask a hospital enrollment specialist or HealthCare.gov about the coverage-loss notice and dates.
  2. Have ready: the notice, your expected yearly income, and your child’s hospital, doctors and medicines.
  3. Ask the hospital to check the exact plan before choosing it, and compare its costs with COBRA.

HealthCare.gov, 800-318-2596 · Official page ↗

After choosing a plan
  • If HealthCare.gov asks for proof of a coverage-loss enrollment event, the usual document deadline is 30 days after plan selection. Other verification deadlines differ—usually 90 days for income and 95 days for citizenship or immigration information—and the actual notice controls. The insurer separately sets the first-premium deadline.
  • For a loss-of-coverage enrollment, the start date generally follows plan-selection and coverage-loss rules, not the date the first premium happens to be paid. A plan selected before the loss can generally start the first of the month after the old coverage ends; one selected afterward generally starts the first of the month after selection. Required verification and the first premium still must be completed for coverage to take effect; the enrollment confirmation states the actual date.
Good to know

The insurer’s name alone does not tell you whether your child’s oncology team is in the plan.

Other details
  • Members of federally recognized tribes and ANCSA shareholders have special enrollment and cost-sharing routes. An enrollment specialist can check these and referral rules.
  • Medicaid and Hawki applications are available year-round.
Ask your social worker

“If our coverage changes, could you help us compare a marketplace plan with COBRA, including costs and our child’s care team?”

Why I’m asking: We need to confirm when our current coverage ends and which new plans cover our child's treatment.

More background and detailed requirements
Additional program information and published rules

Who does what

The three parts, side by side. The agency decides; nobody on this page does.

You

Report the event and date inside the period, send documents within 30 days, and pay the first premium by the insurer's date.

Your social worker

Connects you to an enrollment assister and checks the exact plan against the center's contracts.

The care team

Records and letters when the application asks for them.

Who decides
The Marketplace (eligibility and credit) and the insurer (coverage start)
Ask your social worker
“Does this Marketplace plan cover our center and specialty pharmacy? Who can help compare it with COBRA before we enroll?”

How to apply

First step: Go to HealthCare.gov's special-enrollment page or call 1-800-318-2596 within 60 days of the loss (90 after Medicaid/CHIP), and report the exact event and date.

  1. Identify the event and its date.
  2. Check the treating hospital and specialty pharmacy against the exact plan.
  3. Compare with COBRA before choosing.

Where it starts: HealthCare.gov special-enrollment page or 1-800-318-2596. State exchanges where they exist

What to gather

  • The coverage-loss notice or the Medicaid/CHIP termination letter with dates
  • An annual income estimate for the tax household
  • The names of the treating hospital, oncologists and the specialty pharmacy to check against the plan

How long: Enrollment is immediate once verified (30 days to send documents). Coverage starts the first of the month after you pick a plan and pay.

Clock: 60 days before or after an ordinary coverage loss to enroll.

Clock: 90 days after Medicaid or CHIP ends to enroll.

What a yes looks like

An enrollment confirmation with the premium, the credit and the start date. The hospital confirms it is in network.

What a no looks like, and the next move

“No qualifying event” or “outside the period”. Ask about COBRA or state continuation, and Medicaid, which has no season.

Watch out

  • A diagnosis alone opens nothing. A lost plan, a move, a birth or a Medicaid/CHIP loss does. A Medicaid denial opens a period only on the timing branch. Keep the application and denial dates.
  • Check the exact plan's network for the treating hospital and the specialty pharmacy before paying. “the hospital takes that insurer” is not enough.
  • The enhanced tax credits ended December 31, 2025; higher-income families can lose all premium help. The monthly low-income enrollment period is paused through 2026.
  • Members of federally recognized tribes and ANCSA shareholders have special enrollment and cost-sharing routes. Ask the Marketplace for the tribal eligibility check, the zero- or limited-cost-sharing plan, and how referrals are handled.

Dates that change this

2025-12-31: The enhanced premium tax credits ended December 31, 2025. In 2026 the credit runs from 100% to 400% of the poverty line; above 400% there is none, and repayment caps are gone.

2025-08-25: The monthly enrollment window for households at or below 150% of the poverty line is paused through plan year 2026.

2026-01-01: For tax year 2026 the below-100% exception for lawfully present immigrants is gone; from tax year 2027 the credit is limited to lawful permanent residents, Cuban/Haitian entrants and COFA migrants.

The numbers and the rules

The arcane layer, kept on purpose. Checked September 10, 2026.

What it is worth

An ACA plan that must take a child with cancer, with a premium tax credit between 100% and 400% of the poverty line. Enrollment outside the yearly season.

Legal protection: Pre-existing-condition protection · 60-day period before or after an ordinary coverage loss · 90-day period after loss of Medicaid or CHIP · 30 days to send documents

What it costs the family: Plan-specific premium and cost-sharing. The enhanced credits ended December 31, 2025, so above 400% of the poverty line there is no credit in 2026.

The eligibility facts, as published

Qualifying event
yes
Window days ordinary loss
60
Window days after medicaid chip loss
90
Document window days
30
Medicaid denial
opens a window only on the timing branch

Decisions this site cannot make: Event and subsidy eligibility

Expect friction on: Network and formulary checks · Enrollment timing

The trap: Check the exact plan's network for the treating hospital and the specialty pharmacy before paying. “the hospital takes that insurer” is not enough.

What changes by state: Some states run their own insurance marketplace. Federal rules set enrollment deadlines.

Where I read this

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