22 September 2010 ~ 62 Comments

Medicare ID numbers Suffixes and Prefixes

Most medicare identification numbers you will see end in A.  This means that that person has medicare under their own social security number.  However there are other ways a person can have medicare and those are reflected in the letter after the social security number on the medicare card. For example if the letter is B or D the social security number will be the husbands If the letter is C it is one of the parent’s numbers.

Here are the suffixes and their descriptions for regular Medicare:

SUFFIX / DESCRIPTION
A Retired worker over 65 or disabled worker
B Wife (over 65) of retired or disabled worker
B1 Husband of retired or disabled worker
B2 Wife whose entitlement is dependent on the care of a child
B3 Second wife

B4 Second husband
B5 Second wife (entitlement dependent on a child)
B6 Ex-wife (entitlement dependent on a child)
B7 Third wife (entitlement dependent on a child)
B8 Third wife
B9 Third husband
C Child (including a disabled child or a student). Suffixes assigned by age, i.e.:
C1 Youngest Child
C2 Next youngest child
C? Etc.
D Widow
D1 Widower
D2 Second Widow
D3 Second Widower
D4 Widow who remarried after age 60
D5 Widower who remarried after age 62
D6 Surviving ex-wife
D7 Second surviving ex-wife
E Widowed mother
E1 Mother (ex-wife) who survives the retired worker
E2 Second widowed mother
E3 Second mother (ex-wife) who survives the retired worker
F Parent category (the F suffix is never used alone) for aged dependents
F1 Father
F2 Mother
F3 Stepfather
F4 Stepmother
F5 Adoptive father
F6 Adoptive mother
F7 Second “alleged” father
F8 Second “alleged” mother
J & K Special beneficiaries whose entitlement depends on the quarters of employment that they have under social security.
J1, J2, K1, K2 Entitled to Part A.
J3, J4, K3, K4 Not entitled to Part A, may purchase Part A.
M An individual enrolled in Part B who is not entitled to retirement and survivor’s or Railroad Retirement insurance and is not eligible for Part A but may purchase Part A coverage.
M1 An individual enrolled in Part B who meets the requirements for Part A but has not applied.
T An individual entitled to Part A benefits but not to retirement and survivor’s or Railroad Retirement insurance or who is entitled to Medicare based on chronic renal disease. It applies whether or not the beneficiary elects to receive Part B.
W Disabled widow
W1 Disabled widower
W2 Second disabled widow
W3 Second disabled widower
W6 Disabled surviving ex-wife
W7 Second disabled surviving ex-wife

If the Letter or letters are in front of the social security number or railroad number, then that patient has Railroad medicare. See Railroad Medicare for more information.

Here are the Railroad Medicare prefixes and their description;

Alpha Character Description
A Railroad retiree – file established when the employee was alive
MA Spouse of the Railroad retiree
MH Spouse of the retiree – employee on Railroad pension when Act passed in 1937
H Employee on Railroad pension when Act passed in 1937
WA Widow(er) of the retiree – file established when the employee was alive
WH Widow(er) – employee on Railroad pension when Act passed in 1937
WD Widow(er) of the retiree – file established after the retiree deceased
WCA Disabled child of the retiree – file established while the retiree was alive
WCD Disabled child of the retiree – file established after the retiree deceased
WCH Survivor of disabled child, of retiree – on Railroad pension when Act passed in 1937
CA Disabled child of the retiree – file established when the employee was alive
PA Survivor parent – file established while employee was alive
PD Survivor parent – file established after employee deceased
PH Survivor parent – employee on Railroad pension when Act passed in 1937

62 Responses to “Medicare ID numbers Suffixes and Prefixes”

  1. Katy Lowe 13 November 2013 at 6:41 am Permalink

    My husband has an old and a newer Medicare card. He does not remember which one is the new one. One has a suffix of A and the other is T. We have seen the chart of suffixes but have no idea which suffix is the correct one for him. He still works, has health insurance through his job and is 71.

  2. Katy Lowe 13 November 2013 at 6:46 am Permalink

    I just found the answer on the internet! The suffix is T if you get medicare but are not yet receiving social security retirement payments. In my husband’s case, the suffix changed to A once he started getting social security.

  3. Suzanne 13 November 2013 at 4:08 pm Permalink

    Thanks for the information.

  4. JANET eICK 6 December 2013 at 11:08 am Permalink

    WHAT DOES THE M IN FRONT OF THE MEDICARE NUMBER MEAN?

  5. Suzanne 7 December 2013 at 4:49 pm Permalink

    MA Spouse of the Railroad retiree
    MH Spouse of the retiree – employee on Railroad pension when Act passed in 1937

  6. r b reed 29 May 2014 at 10:40 am Permalink

    Thank you for the very useful information!

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  9. Maureen 26 July 2014 at 7:21 am Permalink

    Rec’d my Medicare Card from RR Board and I am wondering about the number on the card. It has MA followed by his SS# not mine. My husband is still employed and has not reached 62/65 yet. Is this correct?

    Thank you
    Maureen

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  12. Maxine Knight 20 November 2014 at 5:11 pm Permalink

    My card does not have any letter in front or bak of it? What does this mean?


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