How does the birthday rule work for Medicare?

Asked by: Darrin Bergstrom  |  Last update: April 10, 2025
Score: 4.7/5 (15 votes)

Q: What is the "Birthday Rule" and how does it apply to the new Medigap Plans? A: If you already have Medigap insurance, you have 60 days of "open enrollment" following your birthday each year when you can buy a new Medigap policy without a medical screening or a new waiting period.

What is the birthday rule in Medicare?

The birthday rule is the nickname for a law that allows those who are already on a Medigap plan to switch to another plan without medical underwriting. In CA, they have created an annual window of 60 days after your birthday to switch plans – hence the name “birthday rule.”

Does Medicare start the month of your birthday or the month after your birthday?

If you qualify for premium-free Part A: Your Part A coverage starts the month you turn 65. (If your birthday is on the first of the month, coverage starts the month before you turn 65.)

How does the birthday rule work?

The birthday rule determines the order that the insurance companies will pay benefits when a dependent child is covered by two health insurance plans. The health insurance plan of the parent whose birthday month and day occurs earlier in the calendar year is primary.

What are the exceptions to the birthday rule?

An exception to the birthday rule is also made during separation or divorce. The parent with child custody is usually responsible for primary payment before the other parent. If one of the parents remarries, their new spouse will provide secondary coverage. The plan of the parent with no custody will pay last.

The Medicare Birthday Rule — Does YOUR state have it?

38 related questions found

What states have the Medicare supplement birthday rule?

Since no federal laws regulate the Medigap birthday rule, the rules are set by each state separately. California and Oregon were the first states to enact the birthday rule for Medicare Supplemental Insurance, and seven more -- Idaho, Illinois, Kentucky, Louisiana, Maryland, Nevada and Oklahoma -- have followed since.

How do you determine which insurance is primary and which is secondary?

The "primary payer" pays what it owes on your bills first, and then sends the rest to the "secondary payer" to pay. The insurance that pays first is called the primary payer. The primary payer pays up to the limits of its coverage. The insurance that pays second is called the secondary payer.

Which states have guaranteed issues for Medigap?

State laws can provide further protections, but only four states— Connecticut, Massachusetts, Maine, and New York—require either continuous or annual guaranteed issue protections for Medigap for all beneficiaries in traditional Medicare ages 65 and older, regardless of their medical history.

What happens if I have a baby while on my parents' insurance?

Will my parent's plan cover my baby after he's born? Your parent's plan, regardless of the source, is generally not required to cover your child as a dependent. Depending on your income, your child may be eligible for coverage under the Medicaid/CHIP program in your state.

How does the birthday problem work?

The birthday paradox is a probability theory that states that the probability of two people in a group sharing the same birthday grows based on the number of pairings, not the number of people in a group. This means it would only take 23 people for there to be a probability of two people sharing the same birthday.

Can I enroll in Medicare 6 months before my 65th birthday?

Generally, you're first eligible to sign up for Part A and Part B starting 3 months before you turn 65 and ending 3 months after the month you turn 65. If you sign up for Medicare, stop your Marketplace coverage so it ends when your Medicare coverage starts. See how to change from Marketplace to Medicare.

Which date does Medicare consider the date?

The date that Medicare considers as the date of service, which can affect refill too soon rejections, is the date on which the patient picks up the prescription and the pharmacy bills Medicare. This is the date that the medication is considered 'dispensed' by the pharmacy.

What are the three requirements for Medicare?

Medicare Part A (Hospital Insurance) and Medicare Part B (Medical Insurance) are available to the individuals below:
  • Age 65 or older.
  • Disabled.
  • End-Stage Renal Disease (ESRD)

Does Medicare start on your birthday or the month of your birthday?

Sign up 3 months before birthday

If you sign up for Medicare Part A and/or Medicare Part B during the first 3 months of your Initial Enrollment Period, your coverage begins on the first day of the month in which you turn 65. Example: Your 65th birthday is on May 20.

What is the 2 day rule for Medicare?

According to the rule: Inpatient services are considered appropriate if the physician expects the patient to require medically necessary hospital care spanning at least 2 midnights. Inpatient services are also appropriate if the physician is providing a service listed as "inpatient only" by Medicare.

What is the golden birthday rule?

What is a Golden Birthday? Your golden birthday is when the date of your birth coincides with your age. For example, if you were born on October 8, your golden birthday took place when you turned 8. If you were born on December 21, your golden birthday took place when you turned 21.

What is the birthday rule example?

The birthday rule says that primary coverage comes from the plan of the parent whose birthday (month and day only) comes first in the year. The other parent's health plan then provides secondary coverage.

How does insurance work when a baby is born?

As a general rule, your provider will require you to add your baby within 30 to 60 days after his or her birth. The policy is retroactive, meaning it'll cover your child's care going back to birth, so don't panic if you're a tired parent and your child is now three weeks old with no insurance.

Do I lose my parents' insurance the day I turn 26?

If you're covered by a parent's job-based plan, your coverage usually ends when you turn 26. But check with the employer or plan. Some states and plans have different rules. If you're on a parent's Marketplace plan, you can remain covered through December 31 of the year you turn 26 (or the age permitted in your state).

What is the 6 month rule for Medicare?

If they're eligible for premium-free Part A, coverage for Part A begins 6 months back from the date they apply, but no earlier than the first month they were eligible for Medicare. Individuals must stop contributing to their health savings account 6 months before applying for Medicare to prevent paying an IRS penalty.

What is the downside to Medigap?

What are the disadvantages of a Medigap plan? There are a couple of cons to consider before choosing a Medigap plan: Premiums: Medigap premiums can be pricey. Coverage: Medicare Supplement plans don't cover everything, so you'd still have to pay out of pocket for things like dental care, vision care and long-term care.

Is Medigap being phased out?

For example, Medigap plans C and F will no longer be available to new Medicare recipients after January 1st, 2020.

What is the best secondary insurance if you have Medicare?

The best Medicare supplement plan providers
  • Best for extra plan benefits: Humana.
  • Best for straightforward coverage: State Farm.
  • Best for extensive medical care coverage: AARP by UnitedHealthcare.
  • Best for a range of Medigap plans: Blue Cross Blue Shield.

Will I lose my Medicaid if I get Medicare?

People who have both Medicare and full Medicaid coverage are “dually eligible.” Medicare pays first when you're a dual eligible and you get Medicare-covered services. Medicaid pays last, after Medicare and any other health insurance you have.

What is the birthday rule for insurance spouse?

If your birthday is earlier in the calendar than your spouse's, then you'll likely be the primary health insurance provider for the dependents. If you and your partner are legally separated or divorced and not remarried, then the one with primary custody of the children provides primary healthcare coverage.