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Renal Chronic Dialysis
Began
(month and year)
No waiting period
+ 30 month COB
period
= date Medicare is
primary
3 Month waiting
period
+ 30 month COB
period
= date Medicare is
primary
January
2017
July 1
2019
October 1
2019
February
2017
August 1
2019 November 1
2019
March
2017 September 1
2019 December 1
2019
April
2017
October 1
2019
January 1
2020
May
2017 November 1
2019
February 1
2020
June
2017 December 1
2019
March 1
2020
July
2017
January 1
2020
April 1
2020
August
2017
February 1
2020
May 1
2020
September
2017
March 1
2020
June 1
2020
October
2017
April 1
2020
July 1
2020
November
2017
May 1
2020
August 1
2020
December
2017
June 1
2020 September 1
2020
For a complete Reference Chart for dates from
January 2005 – December 2021
,
click hereRegular Chronic Dialysis Began (RCBD) /
First Date of Dialysis Ever (FDODE)
COB Reference Chart
2017