For retroactive adjustments, this field indicates the issue year of the original payment, for which the Medicare amount should be adjusted.
This is a defined field for Deduction Type MD in the variable deduction portion of the payment files.
XX:MEDISYR/A4 = XX:MEDISCC|XX:MEDISYY;
CC = Century (19 through 20)
YY = Year (00 through 99)
PH Payment History Data
PY Payment History Extract
Last Updated: October 3, 2005