Lamar Odom has more than an alleged crack addiction to tackle — the NBA star faces a nasty custody and child-support battle in Manhattan next month.

Odom, who fathered three kids — one of whom died as an infant — with high-school sweetheart Liza Morales, will face off against her on Sept. 12 before Manhattan Supreme Court Justice Matthew Cooper, records show.

Odom’s trial prep coincides with reports he split from his reality-TV-star wife, Khloe Kardashian, after she tried to stage an intervention to get him from a Los Angeles hotel room into rehab.

“Friends are trying to get him help for an unspecified drug problem,” a source. told ESPN.

Morales wants an increase in monthly support from $10,000 to $25,000.

Odom’s attorney, Robert Michaels, says the trial date has been indefinitely postponed, for reasons unrelated to his client’s reported addiction.

But the proceeding is still on the court’s September calendar.

Neither Morales nor her attorney returned calls for comment.