30 / 38
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
2016
July 1
2018
October 1
2018
February
2016
August 1
2018 November 1
2018
March
2016 September 1
2018 December 1
2018
April
2016
October 1
2018
January 1
2019
May
2016 November 1
2018
February 1
2019
June
2016 December 1
2018
March 1
2019
July
2016
January 1
2019
April 1
2019
August
2016
February 1
2019
May 1
2019
September
2016
March 1
2019
June 1
2019
October
2016
April 1
2019
July 1
2019
November
2016
May 1
2019
August 1
2019
December
2016
June 1
2019 September 1
2019
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
2016