House Speaker John A. Boehner (R-Ohio) is having a minor back procedure Wednesday afternoon at a Washington area hospital, his office says.

Michael Steel, a Boehner spokesman, said in a statement that the speaker is having "a minor, unscheduled medical procedure related to recurring back problems."

House Speaker John A. Boehner (R-Ohio) meets with reporters Tuesday at the Republican National Committee headquarters. (Melina Mara/The Washington Post)

Steel declined to say where the procedure will be performed and when Boehner's back began bothering him. He alerted reporters in part because the procedure means Boehner will miss a dedication ceremony Wednesday afternoon for a tree being planted on the grounds of the U.S. Capitol in memory of Anne Frank.

Boehner has a long history of back problems, dating to his teenage years, when he was working at his family's bar. He later received a medical discharge from the U.S. Navy because of his back problems.