HSE officials will face questions today on the number of discretionary medical cards that are being returned after the government halted a major review.
The issue is set to top the agenda at a meeting of the Public Accounts committee later.
It'll also hear details of the HSE's current financial situation, along with ways to deal with the budget deficit.
The executive's Director General Tony O'Brien and Dr Ambrose OÂ’Loughlin, who's the Secretary General of the Department of Health, are due to give evidence.
Fianna Fail Deputy John McGuinness is the Chairman of the Public Accounts Committee.
