Buying a Medigap Plan Under 65 on SSDI

Federal law does not require private insurance companies to sell Medicare Supplement Insurance (Medigap) policies to Social Security Disability Insurance (SSDI) beneficiaries who are under age 65. Whether you can buy a Medigap plan before turning 65 depends almost entirely on your state of residence and state insurance department regulations.

While Medicare covers hospital and medical care, substantial out-of-pocket costs remain. Understanding how federal statutes and state rules interact helps disabled beneficiaries protect themselves from unexpected medical expenses.

The Federal Statutory Framework and the Under-65 Gap

Medigap policies are standardized private health insurance plans designed to cover copayments, coinsurance, and deductibles left unpaid by Original Medicare. Federal standards for these policies are established under Section 1882 of the Social Security Act, codified at 42 U.S.C. 1395ss, and implemented by the Centers for Medicare and Medicaid Services (CMS) under 42 CFR Part 403.

Under federal statute, Congress established a mandatory six-month Medigap Open Enrollment Period. This federal protection guarantees that individuals aged 65 or older cannot be denied a policy, subjected to medical underwriting, or charged higher rates because of past health problems.

However, Section 1882 of the Social Security Act does not extend this nationwide guaranteed issue mandate to beneficiaries who qualify for Medicare through disability before reaching age 65. Instead, federal law leaves the decision to individual state legislatures and state insurance commissioners. As a result, access to supplemental coverage for disabled workers varies dramatically across state lines.

How Medigap Coordinates with Medicare Part A and Part B

To evaluate whether you need supplemental coverage, it is helpful to examine the cost-sharing structure of Original Medicare. Under 42 U.S.C. 1395e and 1395l, Medicare Part A and Part B leave beneficiaries exposed to uncapped cost sharing.

In 2026, the Medicare Part A hospital inpatient deductible is $1,736 per benefit period, with daily coinsurance charges of $434 for days 61 through 90, and $868 per day for lifetime reserve days. For Medicare Part B, beneficiaries in 2026 pay an annual deductible of $283, followed by a standard 20 percent coinsurance on all approved outpatient services, physician visits, and durable medical equipment.

Because Part B does not have an annual out-of-pocket maximum, a beneficiary undergoing intensive treatments or frequent hospitalizations can accumulate substantial medical debt. Medigap plans, labeled Plans A through N in most states, are designed to absorb these out-of-pocket expenses.

The State-by-State Patchwork of Under-65 Protections

Because federal law is silent on under-65 guaranteed issue rights, states have enacted their own rules. According to CMS guidance, more than 30 states require insurers to offer at least one type of Medigap policy to disabled Medicare beneficiaries under 65. The remaining states offer minimal or no consumer protections.

States with Guaranteed Issue Protections

In several states, laws require commercial insurance carriers to offer all or most standardized Medigap plans to disabled beneficiaries under 65. Furthermore, some of these states mandate community rating, preventing insurers from charging disabled individuals higher premiums than beneficiaries who qualify by age.

States such as New York, Connecticut, Maine, and Massachusetts have established community-rating rules or specialized statutory pools. Under New York Insurance Law Section 3231, for example, insurers must offer policies to all Medicare beneficiaries continuously on an open-enrollment, community-rated basis. In Connecticut, state regulations require insurers selling Medigap plans to offer them to all eligible Medicare beneficiaries regardless of age.

States with Limited Access or Plan Restrictions

A second group of states requires insurers to offer at least one Medigap policy to disabled individuals under 65, but restricts which plans must be sold. Common statutory mandates require insurers to offer at least Plan A, the most basic standardized package, or a choice between Plan A and one or two other plans.

States in this category include California, Colorado, Illinois, Maryland, North Carolina, and Pennsylvania. In California, under California Insurance Code Section 10192.11, insurers must offer Medigap plans to individuals under 65 who qualify for Medicare due to disability, though carriers may charge different premium tiers. In Colorado, state insurance regulations require carriers to make at least Plan A available during an initial enrollment window.

States Allowing Unrestricted Underwriting or Higher Premiums

Even where states require insurers to sell policies to under-65 beneficiaries, many states do not regulate the premiums carriers can charge. In states like Texas, Florida, and Louisiana, insurers are permitted to create a separate risk pool for disabled individuals under 65.

In these jurisdictions, monthly premiums for a disabled individual on SSDI can be two to four times higher than premiums charged to a healthy 65-year-old. While the legal right to purchase coverage exists, the monthly cost can exceed several hundred dollars, placing policies out of reach for beneficiaries living on fixed disability checks.

States with No Medigap Protections Under 65

In approximately 15 states, state statutes do not require private insurance carriers to sell any Medigap policies to disabled Medicare beneficiaries under 65. In states such as Alabama, Arizona, Nebraska, Nevada, Ohio, and Wyoming, private insurers are legally permitted to decline applications, impose medical underwriting, or refuse coverage altogether based on disability status.

Beneficiaries residing in these states must generally rely on alternative coverage mechanisms until they turn 65, or look for narrow exceptions such as high-risk insurance pools where available.

Enrollment Timelines and Application Rules

In states that mandate Medigap availability for disabled individuals, enrollment deadlines are strictly enforced. State insurance departments generally tie the state open enrollment window directly to Medicare Part B enrollment.

Under most state regulations, disabled beneficiaries receive a six-month state open enrollment period. This window begins on the first day of the month in which the beneficiary's Medicare Part B coverage becomes effective, which is typically month 25 of SSDI cash entitlement under 42 U.S.C. 426(b).

If you fail to apply within this initial six-month period, insurers in many states can deny coverage or require medical underwriting for future applications. Beneficiaries should contact their State Health Insurance Assistance Program (SHIP) or their state department of insurance before Part B begins to verify local deadlines.

The Age 65 Medigap Reset

For disabled beneficiaries who cannot afford Medigap premiums or who live in states without under-65 access, federal law provides a second opportunity. Under Section 1882(s)(2) of the Social Security Act (42 U.S.C. 1395ss(s)(2)), every Medicare beneficiary receives a full, federally protected Medigap Open Enrollment Period upon turning 65.

This six-month federal open enrollment period begins on the first day of the month you reach age 65, provided you are enrolled in Medicare Part B. During this statutory window, private insurance carriers cannot deny you any standardized Medigap policy they offer in your area. Carriers cannot charge higher premiums based on your medical history, chronic illness, or disability rating.

This federal reset guarantees that disabled beneficiaries who had expensive, restricted, or no Medigap coverage under 65 can transition into standard age-65 pricing and access the full range of supplemental plans.

Alternative Coverage Strategies for Beneficiaries Under 65

If you reside in a state where Medigap is unavailable or prohibitively expensive, other coverage pathways can help manage out-of-pocket medical costs.

Medicare Advantage plans (Part C), authorized under Title XVIII of the Social Security Act, offer an alternative to Original Medicare. Under the 21st Century Cures Act (Public Law 114-255), commercial Medicare Advantage plans cannot deny enrollment to any Medicare beneficiary with Part A and Part B based on health conditions. These plans include mandatory annual out-of-pocket limits, providing a financial ceiling that Original Medicare lacks.

Low-income SSDI beneficiaries may also qualify for financial relief through state Medicare Savings Programs (MSPs) under Title XIX of the Social Security Act. For example, the Qualified Medicare Beneficiary (QMB) program pays Part A and Part B premiums, deductibles, and coinsurance for individuals meeting income and asset guidelines. In 2026, the federal monthly income limit for QMB is $1,350 for an individual. Beneficiaries enrolled in QMB cannot be billed for Medicare cost-sharing, eliminating the need for a private Medigap policy.

This article provides general information about Social Security and Medicare rules, not legal advice. Program rules and state insurance regulations change over time. For advice about your specific situation, consult a qualified representative, your local SHIP counselor, or your state insurance department.