[This story has been updated.]

The week of Dec. 10, Yankees left-hander CC Sabathia was scheduled to accompany Red Sox center fielder Jackie Bradley on a trip to London, England to promote a series between the two AL East rivals that is set for London in June 2019.

But shortly before his planned departure, Sabathia began experiencing symptoms of acid reflux and heartburn, and noticed that he began to sweat more quickly than usual while riding an exercise bike.

Sabathia, 38, decided to get checked out. Yet, even after he struggled through a stress test, he could not have imagined the news he was about to receive.

He had a blockage in one of the arteries leading from his heart, and within days required a procedure in which doctors would insert a stent to open the artery.

The procedure, known as an angioplasty, is not uncommon — more than a half million Americans undergo one each year, according to a New York Times article from 2013.

Sabathia met with doctors Friday and learned that his prognosis is excellent, both short- and long-term. He is expected to report to spring training as scheduled with the Yankees’ pitchers and catchers in mid-February.

The outcome might have been different if Sabathia had ignored his symptoms.

He would have been at risk for a heart attack.

“CC was experiencing some chest pain which turned out to be a blockage in one artery from his heart,” said Sabathia’s agent, Kyle Thousand of Roc Nation Sports, in a statement to The Athletic.

“A procedure was done to insert a stent to clear the blockage on Dec. 11. CC is doing great and will be reporting to spring training on time to get ready to play for his upcoming final season in 2019.”

Sabathia, who signed a one-year, $8 million free-agent contract to return to the Yankees on Nov. 7, declined comment.

Yankees general manager Brian Cashman issued a statement following the publication of this report:

“We are thankful that CC was smart enough to convey his symptoms to our medical staff, and in turn they immediately engaged NewYork-Presbyterian Hospital, who quickly determined the root cause of what ailed him. We are also encouraged that the procedure CC underwent was performed as planned. He is such a dynamic person beyond his excellence on the field, and we will proceed with his health at the forefront of our priorities. We will continue to follow the guidance and expertise of the doctors — who have conveyed that CC will report as scheduled to Tampa in February to prepare for the 2019 season.”

The procedure forced Sabathia to curb his normal offseason workouts for one month, but he already has resumed limited activity, including lifting light weights. He will undergo a stress test on Jan. 8, and if everything goes well, he then will ramp up in normal fashion for spring training.

The insertion of the stent figures to benefit Sabathia in his cardiovascular work, and one person close to him said the difference the pitcher is experiencing physically is “night and day.”

The 2019 season will be Sabathia’s 19th in the majors. He made 29 starts for the Yankees last season, finishing with a 3.65 ERA — his lowest since 2012 — in 153 innings.

(Photo of Sabathia: Brad Penner / USA TODAY Sports)