Do Medicare numbers use the letter O?

Asked by: Tyrel McCullough Sr.  |  Last update: November 13, 2023
Score: 4.2/5 (37 votes)

MBIs are numbers and upper-case letters. We'll use numbers 0-9 and all letters from A to Z, except for S, L, O, I, B, and Z. This will help the characters be easier to read. If you use lowercase letters, our system will convert them to uppercase letters.

What is the format of the Medicare card number?

The 11 digit Medicare card number comprises: - a card number (8 digits), - a check digit (1 digit), - an issue number (1 digit), and - a person number (1 digit). The Medicare card number should only be collected from persons eligible to receive health services that are to be funded by the Commonwealth government.

What does your Medicare number start with?

On a Medicare card, an MBI will appear similar to this: 1EG4-TE5-MK73. The second, fifth, eighth, and ninth characters are always letters while the first, fourth, seventh, tenth, and eleventh characters are always numbers. You can visit for more information on the format of an MBI.

What are the alphabets of Medicare?

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).

Are there any zeros in Medicare numbers?

The only difference is the “Medicare number,” which is unique to you and is a combination of 11 letters and numbers. According to the website, your new number uses numbers zero through nine. Another interesting tidbit: the letters B, I, L, O, S and Z are never used.

What is A Medicare Number Used For?

23 related questions found

Is it a zero or the letter O?

When it comes to 0 and O, in most fonts, 0 is narrower and O is rounder. I recently heard one teacher help students remember this by saying that 0 is skinnier because it has “zero fat”.

What is a traditional Medicare number?

Your Medicare identification number is located on your red, white, and blue Medicare card. The standard Medicare number format contains eleven random letters and numbers, each of which are arranged in a specific pattern that is used to identify you and only you.

What does the M at the end of a Medicare number mean?

Code M – is used for someone who is enrolled in Medicare Part B but is not yet eligible for Medicare Part A coverage. M1 indicates you are enrolled in Part B and are also eligible for coverage under Medicare Part A but have refused Part A coverage.

What is the T at the end of my 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.

When did Medicare change numbers?

A. Background on the new Medicare Number

The Centers for Medicare & Medicaid Services (CMS) developed a new number called the Medicare Beneficiary Identifier (MBI), which replaces the SSN-based Health Insurance Claim Number (HICN) on the Medicare card. CMS began mailing the new Medicare cards in April 2018.

How do I verify a Medicare number?

Members can check their Medicare ID number by signing into If a member doesn't have a account yet, they can 'create an account' and follow the instructions. For questions, members can call 1-800-MEDICARE (800-633-4227 TTY 877-486-2048).

What are the numbers on Medicare?

A Medicare Individual Reference Number (IRN) is a number that represents the position of a person on a Medicare card. For example, a person who is listed second on a Medicare Card has an IRN of 2. The IRN appears to the left of the patient's name on their Medicare card.

What do letters and numbers mean on Medicare card?

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.

Do Medicare numbers start with a letter or number?

Characters 1, 4, 7, 10, and 11 will always be a number. The 3rd and 6th characters will be a letter or a number. The dashes aren't used as part of the MBI. They won't be entered into computer systems or used in file formats.

How do I find my 11-digit Medicare number?

If you have your card, your Medicare number will be the unique 11-digit number on the front of the card. If you don't have your card and you need your Medicare number right away, it is easy to find by logging into your account.

How many digits is the new Medicare number?

Social security numbers on cards, which are part of the 10 digit Health Insurance Claim Number (HICN), have been replaced with an 11-digit Medicare Beneficiary Identifier (MBI) number.

What does the B at the end of Medicare number mean?

Medicare Suffixes. Here's what the letters behind the Medicare number mean: *A = retired worker. B. = wife of retired worker.

What does letter B after Social Security number mean?

A. Primary claimant (wage earner) B. Aged wife, age 62 or over. B1.

How many digits is a Medicare provider number?

This identifier is a six-digit number. The first two digits specify the state in which the provider is located, and the last four digits indicate the type of facility. For Ambulatory Surgery Centers, the MPN is 10 digits — with the first two digits representing the state where the surgery center is located.

Did Medicare numbers change?

The Centers for Medicare & Medicaid Services (CMS) made the number change to protect people using Medicare from identity theft or illegal use of Medicare benefits. Your new MBI has 11 characters that consist of numbers and capital letters. To avoid confusion, an MBI will not contain the letters S, L, O, I, B, or Z.

Are Medicare numbers random?

Keep Your Medicare Information Safe and Secure

Today's Medicare numbers have no hidden codes or sequences at all. They are purely random. Even so, your Medicare number is still considered to be personal and private.

What is the difference between Medicare number and Medicare claim number?

Your Medicare claim number is the same as your Medicare card number. That means your Medicare claim number is the same as the 11-character series of numbers and letters on the front of your red, white and blue Medicare card.

What does an O with a vertical line through it mean?

The slashed zero glyph is often used to distinguish the digit "zero" ("0") from the Latin script letter "O" anywhere that the distinction needs emphasis, particularly in encoding systems, scientific and engineering applications, computer programming (such as software development), and telecommunications.

What is the letter O in numbers?

Common names for the number 0 in English are zero, nought, naught (/nɔːt/), nil. In contexts where at least one adjacent digit distinguishes it from the letter O, the number is sometimes pronounced as oh or o (/oʊ/). Informal or slang terms for 0 include zilch and zip.

What is the rule for letter O?

Your tongue should also be away from the top part of the mouth. Then you make the sound by bringing in the lips in a circular manner and the tongue moving upward and towards the front of the mouth ending right in the middle. If you combine the "oh" and "oo" sound, you have the sound of the letter "O".