The Medicare suffix is typically a letter or a combination of letters and numbers that follow the main Medicare number. It helps identify the specific type of Medicare coverage a person has. For example, the most common suffixes are A, B, D, or a combination like MA (Medicare Advantage) or MBI (Medicare Beneficiary Identifier)

1. Medicare Suffixes
Here’s what the letters behind the Medicare number mean:
*A = retired worker
B = wife of retired worker
B1 = husband of retired worker
B6 = divorced wife
B9 = divorced second wife
C = child of retired or deceased worker; numbers after
C denote order of children claiming benefit
D = widow
D1 = widower
D6 = surviving divorced wife
E = mother of a child of a deceased worker
E1 = divorced mother of a child of a deceased worker
F1 = aged dependent father
F2 = aged dependent mother
*HA = disabled worker
HB = wife of disabled worker
HC = child of disabled worker
*J1 = special “over 72” benefit, has A and B
K1 = wife of “over 72” benefit, has A and B
*M = has Part B Medicare only, no SSA benefit
*T = has A and B Medicare, no SSA benefit
= disabled widow
WA = railroad retirement
*Denotes the recipient’s own social security number.
For More Information and other Medical Billing, Medicare and Blue cross Blue
Shield Insurance Codes Please Visit
Blue Cross Blue Shield Insurance Prefix Codes
Medical Billing Place of Service Codes
Medical Billing Modifiers List
Medicare Billing RCM