The Medigap Birthday Rule (or "Birthday Window") is a state-specific provision allowing existing Medicare Supplement (Medigap) policyholders to switch to a new plan or insurer around their birthday without medical underwriting, offering a guaranteed-issue right to change plans if they have pre-existing conditions. This annual window (typically 30-60+ days around the birthday) lets beneficiaries shop for better rates or plans with equal or fewer benefits, acting as a risk-free way to avoid health denials for coverage upgrades.
The Medigap Birthday Rule is in effect in nine states: California, Idaho, Illinois, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, and Oregon. This rule allows existing Medigap policyholders to switch to a new Medigap plan of equal or lesser benefits without needing medical underwriting around their birthday.
California's original birthday rule took effect in 1997 but only allowed for a 30-day window. Individuals must be between the ages of 65 and 76. The original birthday rule was effetive 2018 but the window was expanded to 30 days prior to the birthdate in 2020.
What Is the Medigap Birthday Rule? The Medigap birthday rule allows you to change Medicare Supplement plans each year during a short window tied to your birthday—without medical questions or denial due to pre-existing conditions. Guaranteed issue rights: Applications must be accepted.
Medicare typically starts on the first day of the month you turn 65, but the exact start date depends on when you enroll within your 7-month Initial Enrollment Period (IEP), which spans three months before, the month of, and three months after your birthday. If you enroll in the first three months of your IEP, coverage begins the first day of your birthday month; sign up during or after your birthday month, and it starts the first of the following month, with automatic enrollment for existing Social Security recipients starting the first day of the birthday month.
The Medicare Birthday Rule is a state-specific benefit for existing Medigap (Medicare Supplement) policyholders, offering a yearly "guaranteed issue" window around their birthday to switch to a new Medigap plan (equal or lesser benefits) without medical underwriting or denial, allowing them to shop for better rates or services without health concerns. This rule exists in about a dozen states (like CA, OR, ID, IL, KY, NV) but has different timelines (e.g., 30-60 days) and rules, so checking your state's Department of Insurance website is crucial.
This benefit is not a permanent or long-term care solution; it's designed to provide short-term, medically necessary care following a qualifying hospital stay. The 100-day limit is per “benefit period,” not per calendar year, and can reset if certain conditions are met.
The California Birthday Rule provides an annual open enrollment within 60 days of the policyholder's birthday to replace a Medicare Supplement policy for the same or lesser coverage. If you have plan F, you can switch to another company's plan F or any other plan.
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You can generally change your Medicare Supplement (Medigap) plan for 2025 during the Annual Enrollment Period (October 15 - December 7, 2024), with changes effective January 1, 2025, but you might also have other opportunities through Special Enrollment Periods (SEPs) if you qualify, or at any time in certain states with guaranteed issue rights or birthday rules, though underwriting often applies outside of these windows, notes Medicare.gov, KFF, and NCOA websites.
Key Takeaways. The birthday rule decides which parent's health plan is primary when a child is covered by both. The plan of the parent whose birthday comes first in the year is primary; it's not based on age. If parents share the same birthday, the plan that has been in effect the longest is primary.
The rule requires that the parent whose birthday comes first in the calendar year would cover the cost of delivering the new baby regardless of whether one parent has better health coverage for a newborn than the other.
What is the Birthday Rule? The Birthday Rule requires companies to provide “guaranteed issue” rights, once a year, to applicants who apply for the same Plan they are currently enrolled in, but with a different insurer. The application must be submitted within sixty (60) days after their birthday.
Rare Exceptions To The Birthday Rule
Should the custodial parent remarry and their new spouse is the one carrying the health insurance policy that the child is under, the new spouse's coverage becomes secondary. Then the non-custodial parent's coverage becomes the third priority policy.
Medigap Premium Increases
Attained-Age plans typically experience premium increases as the policyholder gets older, while Issue-Age plans may experience premium increases due to inflation and other factors. Community-Rated plans may also experience premium increases due to inflation, but not due to age.
You will typically pay less for an issue-age-rated plan if you enroll in the plan when you're younger. Your premiums also won't increase based on your age. Attained-age-rated Medigap plans set their premiums based on your current age. As you age, your Medigap plan premiums will gradually increase each year.
Starting in 2025, there is an annual limit on what you pay out-of-pocket for prescription medications through Medicare and Medicare Advantage prescription drug plans. All prescription medications, including specialty medications, covered by Part D plans are included under this cap.
The Medicare 2-Midnight Rule is a Centers for Medicare & Medicaid Services(CMS) guideline for hospital admissions, stating that if a doctor expects a patient to need hospital care crossing at least two midnights, the stay generally qualifies for Medicare Part A inpatient payment;
Yes, the Medicare Part D donut hole (coverage gap) is officially gone as of January 1, 2025, eliminated by the Inflation Reduction Act (IRA), simplifying coverage into three phases: deductible, initial coverage, and catastrophic, with a new $2,000 out-of-pocket spending cap for covered drugs in 2025.
The Birthday Rule states that for a dependent child of parents who are not legally separated or divorced, the insurance of the parents whose birthday falls earlier in the year (not the actual year but the month in which the parent was born) is the primary carrier.
✅Facts • The most recent national Medicare card update (with new Medicare numbers replacing Social Security Numbers) was completed in 2019. No new cards are being issued for 2025 or any upcoming year unless you personally request a replacement or are notified by Medicare.
The short answer to this simple question is no. Whether you're enrolled in Original Medicare (Parts A and B), a Medicare Advantage (MA) plan, a Part D prescription drug plan (PDP) or a Medicare Supplement plan, your plan will renew automatically.
Each fall, when we ask the IRS for information to determine next year's premiums, we ask for tax information to verify your reports of changes affecting your income-related monthly adjustment amounts, if any. We also ask the IRS for your two-year-old MAGI if we've temporarily used three-year-old MAGI.