A Senate budget estimates hearing in Canberra has been told $25 million in contracts with PwC are being examined for any conflicts of interest and risks.
The federal health department is taking a fresh look at its $25 million worth of contracts with PwC to check on any conflicts of interest.
A Senate estimates committee heard on Friday the department had 12 contracts with the major consultancy firm.
"We are actively engaging with PwC at the moment to identify any of those potential areas (of conflicts)," department secretary Brendan Murphy said.
"They assure us that they have processes to manage these things, but we are going through every one of our contracts."
The committee heard some of the contracts were entered into this year, after the Tax Practitioners Board took action against former PwC partner Peter Collins over his sharing of confidential government briefings on multinational tax reform with partners and clients.
The Australian Federal Police is now investigating the matter.
Health department Chief Operating Officer Charles Wann said aged care contracts were a key focus for the review.
"It does represent one of the higher value contracts that we've got in terms of business advisory services," he said.
"That's an obvious area where conflict might exist, so we've asked some specific questions of PwC around their arrangements and how they're managing that conflict and whether there have been any issues arisen that needed to be notified."
He said he expected PwC's advice by the end of next week.
Mr Wann said part of the consideration of value for taxpayers' money was ethical conduct.
Any new contracts would be covered by new criteria issued by the finance department, he said.
