A public viewing will be held Wednesday from 5 p.m. to 8 p.m. at Forest Lawn Memorial Park-Hollywood Hills, followed by a memorial service there at 11 a.m. Thursday.
"Rick wanted everyone who loved him to be with him at the end and to celebrate his life," said Sujata Murthy, his label's spokeswoman.
James was found dead at his apartment. An autopsy Saturday failed to determine the cause of death.
James had a history of cocaine addiction that led to two assault convictions in the 1990s and a two-year stretch in prison.
Coroner's officials were awaiting results of a toxicology test, which they said could take several weeks.