The decision to scratch Busch from the points was made in consultation with Richard Childress Racing ahead of the upcoming Cracker Barrel 400 at Nashville Superspeedway.
Busch had been 27th in the standings before he died due to complications from pneumonia.
US sources, including The Athletic, this week obtained Busch’s death certificate, which revealed more details about his death.
It confirmed Busch had bacterial pneumonia for “days to weeks” that manifested into sepsis, which lasted a day.
Sepsis led to disseminated intravascular coagulation (DIC), a condition that causes abnormal blood clots and restricts blood flow to organs.
Busch suffered from disseminated intravascular coagulation and hemorrhagic shock for several hours.
Busch died on May 21 at 4:37 pm of natural causes. He was cremated in Mooresville, North Carolina after his death.
His family said in a statement that severe pneumonia had progressed into sepsis, “resulting in rapid and overwhelming associated complications.”
The stock car racing legend had been sick for several weeks and had been open about it in the press.
At Watkins Glen, he called for “a shot” post-race, prompting concerns.
Busch spoke at Dover a week later about a lingering cough.
“You can kind of hear it — I’m still not great,” he said.
“But the cough was pretty substantial last week.”
Busch went on to in the NASCAR Craftsman Truck Series race and, only four days later, collapsed while using a Chevrolet simulator at the GM Charlotte Technical Centre.
According to a 911 call released in the days after his death, Busch had been coughing blood, had shortness of breath, felt very hot and thought he was about to faint.
Busch died a day after being admitted to hospital. He is survived by his wife Samantha, 11-year-old son Brexton, and four-year-old daughter Lennix.
Busch’s death has been met with widespread grief from the NASCAR and wider stock car racing community.
Joe Gibbs Racing driver Chase Briscoe said it was wake-up call for stock car racing and that everyone should take their health more seriously.
Countless tributes were paid to him at Charlotte Motor Speedway across three days of racing for the Cup Seris, O’Reilly Auto Parts Series, and Craftsman Truck Series.
NASCAR CEO Steve O’Donnell spoke prior to the start of the Coca-Cola 600.
“Samantha, I want you to know that this sport stands with you, and that you and your children are NASCAR family forever,” O’Donnell said.
“And Brexton and Lennix, your dad loved you with all his heart… Kyle Busch was NASCAR. He was one of a kind, and there will never be another.”
NASCAR team owner Richard Childress is due to speak to media on June 6 (local time) at Michigan.
“Richard Childress Racing appreciates the outpouring of love and support,” the team said in a statement.
“While his impact on RCR is undeniable, Kyle Busch’s far-reaching influence transcends the sport and will endure for generations. Our thoughts and prayers remain with Samantha, Brexton, Lennix, the entire Busch family, the fans, and racers who are suffering.
“Richard Childress will be available to members of the media on Saturday, June 6 at 12 Noon at Michigan International Speedway.
“We respectfully ask for privacy for the Busch family and everyone at RCR until that time.”
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