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What does the letter after my Medicare number mean?

Published on 2011-11-09 14:50:28Category: General Medicare

We have been getting more questions from people asking what the letters mean in their Medicare claim number.  Here is an explaination and chart of the letter meaning provided by the Social Security Administration:

The Social Security number followed by one of these codes is often referred to as a claim number.  Social Security assigns these codes once you apply for benefits.  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 123-45-6789A. This number will also be used as your Medicare claim number, once you are eligible for Medicare. 






Primary claimant (wage earner)


Aged wife, age 62 or over


Aged husband, age 62 or over


Young wife, with a child in her care


Aged wife, age 62 or over, second claimant


Young wife, with a child in her care, second claimant

B6 Divorced wife, age 62 or over
BY Young husband, with a child in his care


Child - Includes minor, student or disabled child


Aged Widow, age 60 or over


Aged widower, age 60 or over

D2 Aged widow (2nd claimant)
Aged widower (2nd claimant)


Surviving Divorced Wife,  age 60 or over


Widowed Mother


Surviving Divorced Mother


Widowed Father


Surviving Divorced Father


Parent (Father)


Parent (Mother)






Adopting Father


Adopting Mother

HA Disabled claimant (wage earner)

Aged wife of disabled claimant, age 62 or over


Uninsured – Premium Health Insurance Benefits (Part A)


Uninsured - Qualified for but refused Health Insurance Benefits (Part A)


Uninsured - Entitled to HIB (Part A) under deemed or renal provisions; or Fully insured who have elected entitlement only to HIB

TA Medicare Qualified Government Employment (MQGE)
TB MQGE aged spouse


Disabled Widow


Disabled Widower


Disabled Surviving Divorced Wife


NOTE: This list is not complete, but shows the most common beneficiary codes.   

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