COB Playbook

COB Reference Chart 2016

Regular Chronic Dialysis Began (RCBD) / First Date of Dialysis Ever (FDODE)

3 Month waiting period + 30 month COB period = date Medicare is primary

No waiting period + 30 month COB period = date Medicare is primary

Renal Chronic Dialysis Began (month and year)

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 here

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