Re: SSDI Credits Question
I found at www.ssa.gov it stated credits are based on the amount of your earnings. SS uses your work history to determine your eligibility for SSDI, SS Retirement, and SS survivors benefits when you die.
In 2011, for example, people receive one credit for each $1,120 of earnings, up to the maximum of four credits per year. Each year the amount of earnings needed for credits goes up slightly as average earnings levels increase. The credits you earn remain on your SS record even if you change jobs or have no earnings for a while .
Information on how we earn credits is at http://www.ssa.gov/pubs/10072.html
If you are on SSDI you have no earnings and thus are not earning credits. Your benefit is "as is" while you are not working. However you continue to be eligible for SS retirement as you are on SSDI. Once you reach retirement age, if you are still on SSDI, it converts to SS Retirement at the same $ amount.
Rt thumb fusion '13. R&L thumb arthroplasty '12 ; RT TKR & Bilat CTS' 11. Fusions: L5-S1('87), L4-S1('93), C5-C7('06), L3-S1('10), C4-C5('13). C5-C7 foraminotomy '08