Originally Posted by roygbiv
ICEP only applies to both A & B starting at the same time. There is a Part B delayed SEP which can be used, but that SEP code has to be used before the effective date of their Part B.
Wrong. Let's say a person turned 65 in January 2016 and only picked up Part A since they'll get it for free, but they continue to work. The person retires and picks up Part B August 1. The ICEP for an MA
would be May, June, July. I don't know why CMS insists on shortening it to just the 3 months before the start of Part B, but that's the way it is.
As for the OP's question, you could try the SEP for retroactive entitlement and see if it floats.