The nine numerals in your Medicare number identify the Social Security record serving as the basis of Medicare. The letter or letters following that number describe the relationship between the person with that record and the person whose name is on the card.
Full Answer
What do the letters on my Medicare card mean?
What do the Medicare letters mean? The four different parts of Medicare are each identified by a letter: A, B, C and D. The number displayed on your Medicare card, however, is known as the Medicare Beneficiary Identifier and is randomly generated for you.
What is the letter coding at the end of Medicare numbers?
Some Medicare recipients, however, are confused about letter coding appearing at the end of a Medicare number, or Medicare Claim Number, which is located on the front of every Medicare card right under the name of the beneficiary. Most people will recognize the numerical part of their Medicare number immediately.
How long is a Medicare number on a card?
The Medicare number displayed on Medicare cards (known as an MBI, or Medicare Beneficiary Identifier) is 11 characters long: The 2nd, 5th, 8th and 9th characters are always a letter, and the 3rd and 6th characters are sometimes a letter.
What do the letters after a Social Security number mean?
Meaning of the letters after a Social Security or Medicare number. / By. The Social Security number followed by one of these codes is often referred to as a claim number. We assign these codes once you apply for benefits. These letter codes may appear on correspondence you receive from Social Security or on your Medicare card.

What does the letter after Medicare number mean?
After the numerical sequence, there will be a letter or a letter followed by another number. These codes indicate Medicare eligibility. For example, assume you are the wife (62 years or older) of the primary claimant, and your husband's SSN is 555-55-5555. Your Medicare number would be 555-55-5555-B.
What is the suffix on a Medicare card?
The second part of the claim number is the suffix. It is usually a letter, which may or may not be followed by a digit. The suffix indicates the type of benefits the claimant receives.
What does the letter B after the Social Security number on a Medicare card mean?
wifeThe Medicare people simply use the Social Security claim number as your Medicare number. Currently, your wife is claiming benefits on your account. “B” is the symbol the Social Security Administration uses to denote wife's benefits. When you die, your wife will be claiming widow's benefits on your record.
Do Medicare numbers start with a letter or number?
What kinds of characters are in the MBI? MBIs are numbers and upper-case letters. We use numbers 1-9 and all letters from A to Z, except for S, L, O, I, B, and Z. If you use lowercase letters, our system will convert them to uppercase letters.
What does a Medicare member ID look like?
How will the MBI look on the new card? The MBI's 2nd, 5th, 8th, and 9th characters will always be a letter. Characters 1, 4, 7, 10, and 11 will always be a number. The 3rd and 6th characters will be a letter or a number.
What does the letter mean after my Social Security number?
claim numberThe letters at the end of a SSN indicate the claim number for a SSI or Social Security beneficiary. Per the SSA: "If you are an SSI beneficiary, your claim number is your nine-digit Social Security Number (SSN) (000-00-0000) followed by two letters such as EI, DI, DS, DC.
What does the t mean at the end of a Medicare number?
According to Social Security's code list, “T” means the person has elected to receive only health insurance benefits (no Social Security) and is entitled to Medicare Part A under deemed or real provisions or fully insured.
What are the 3 types of Social Security?
Social Security Benefits: Retirement, Disability, Dependents, and Survivors (OASDI)
What does D mean on a Social Security award letter?
Aged WidowChild – Includes minor, student or disabled child. D. Aged Widow, age 60 or over.
What are the different Medicare letters?
There are four parts of Medicare: Part A, Part B, Part C, and Part D.Part A provides inpatient/hospital coverage.Part B provides outpatient/medical coverage.Part C offers an alternate way to receive your Medicare benefits (see below for more information).Part D provides prescription drug coverage.
How do I read my Medicare card number?
The IRN appears to the left of the patient's name on their Medicare card. This is not a unique identifier. While your Individual Reference Number is the number to the left of your name on your card, your Medicare Card Number is the 10 digit number that appears above your name, across the top section of the card.
Is Medicare number same as member ID?
Your card has a Medicare Number that's unique to you — it's not your Social Security Number. This helps protect your identity.
What do the letters on my Medicare card mean?
What do the letters on your Medicare card mean? The Medicare number displayed on Medicare cards (known as an MBI, or Medicare Beneficiary Identifier) is 11 characters long: The 2nd, 5th, 8th and 9th characters are always a letter, and the 3rd and 6th characters are sometimes a letter. All other characters will be numbers, and the letters S, L, O, ...
What is Medicare Part B?
Medicare Part B is medical insurance and provides coverage for outpatient doctor’s appointments and medical devices. Medicare Part C, also known as Medicare Advantage, provides coverage for everything found in Part A and Part B through one plan provided by a private insurer.
What is Medicare Supplement Insurance?
Medicare Supplement Insurance, also called Medigap, uses a letter system to identify its plans. Medicare Supplement Insurance is used in conjunction with Part A and Part B of Medicare to provide coverage for certain out-of-pocket expenses like some Medicare deductibles and coinsurance.
Does Medicare cover dental insurance?
Many Medicare Advantage plans may also cover additional benefits not covered by Part A and Part B, such as prescription drugs, dental, vision, hearing, wellness programs like SilverSneakers and more. Medicare Part D provides coverage exclusively for prescription drugs.
What do the letters after a Social Security number mean?
What do the letters after a Social Security or Medicare number mean? The Social Security number followed by one of these codes is often referred to as a claim number. We assign these codes once you apply for benefits.
What is the claim number for Medicare?
These letter codes may appear on correspondence you receive from Social Security or on your Medicare card. They will never appear on a Social Security card. For example, if the wage earner applying for benefits and your number is 123-45-6789, then your claim number is 123-45-6789 A . This number will also be used as your Medicare claim number, ...
Protect your Medicare Number like a credit card
Only give personal information, like your Medicare Number, to health care providers, your insurance companies or health plans (and their licensed agents or brokers), or people you trust that work with Medicare, like your State Health Insurance Assistance Program (SHIP) State Health Insurance Assistance Program (SHIP) A state program that gets money from the federal government to give free local health insurance counseling to people with Medicare. ..
Carrying your card
You’ll need the information on your Medicare card to join a Medicare health or drug plan or buy Medicare Supplement Insurance (Medigap), Medicare Supplement Insurance (Medigap) An insurance policy you can buy to help lower your share of certain costs for Part A and Part B services (Original Medicare). so keep your Medicare card in a safe place.
How do you get another Medicare card?
My card is lost or damaged — Log into (or create) your Medicare account to print an official copy of your Medicare card. You can also call us at 1-800-MEDICARE (1-800-633-4227) to order a replacement card. TTY users can call 1-877-486-2048.
