Darren Lehmann will undergo bypass surgery on Saturday after being taken ill on the Gold Coast on his 50th birthday, Cricinfo reports.
Lehmann, who was there to watch his son Jake play for the Cricket Australia XI against England Lions, suffered chest pains on Wednesday morning. On Wednesday evening, he was resting in hospital ahead of
his surgery in three days in Brisbane.
"I would like to thank everyone in the Australian cricket family for their concern," Lehmann said in a statement put out by Cricket Australia.
"I am receiving the best of medical care and am confident I'll be back on my feet soon."
Lehmann is currently coach of the Brisbane Heat in the Big Bash.
