COB Playbook

COB Reference Chart 2013

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

2013

July 1

2015

October 1

2015

February

2013

August 1

2015 November 1

2015

March

2013 September 1

2015 December 1

2015

April

2013

October 1

2015

January 1

2016

May

2013 November 1

2015

February 1

2016

June

2013 December 1

2015

March 1

2016

July

2013

January 1

2016

April 1

2016

August

2013

February 1

2016

May 1

2016

September

2013

March 1

2016

June 1

2016

October

2013

April 1

2016

July 1

2016

November

2013

May 1

2016

August 1

2016

December

2013

June 1

2016 September 1

2016

For a complete Reference Chart for dates from January 2005 – December 2021 , click here