Suleman is expected to return to court next month for another hearing, unless her defense lawyer reaches a plea deal with prosecutors.
The 38-year-old mother had previously pleaded not guilty to three felony counts: one count of aid by misrepresentation and two counts of perjury by false application of aid.
The Los Angeles County District Attorney's Office says Suleman received nearly $10,000 in medical benefits she was not entitled to, so an amended felony complaint was filed against her with an additional count of aid by misrepresentation.
According to court documents, Suleman filed for public assistance last year, but she allegedly did not reveal earnings she received from videos and personal appearances.
Authorities say she owes the state about $26,000 in restitution.
During a hearing that lasted about five minutes, the prosecution subpoenaed five new files associated with money Suleman allegedly failed to report.
Suleman spoke only once in court, and it was to softly say "Yes" when Superior Court Judge David M. Horowitz asked if she agreed to waive her right to trial to return to court April 16 for another hearing.
The infamous mother of 14 could be sentenced to as much as six years and four months in jail. But prosecutors have said it's unlikely she would serve that much time, if any, if she agrees to pay back the money.
The Associated Press contributed to this report.