The Diff'rent Strokes star, 42, is currently listed in critical condition in a Provo, Utah, hospital.
"I can confirm Mr. Coleman is a patient here at Utah Valley Regional Medical Center," hospital spokeswoman Janet Frank tells PEOPLE. "He's listed in critical condition. He was admitted Wednesday. We are not confirming what department he's in or any further details."
Coleman's brother-in-law told TMZ.com that the actor suffered a head injury after a fall.
A rep and lawyer for the actor didn't return calls for comment.
Coleman was hospitalized after suffering a seizure on the set of The Insider in February, and was hospitalized in January as well.