Mr Lenihan, who is receiving treatment for cancer, said he had made full public disclosure of his condition in January and the position had not changed since then.
He was responding to questions about whether his state of health would be a factor in the expected Cabinet reshuffle.
Asked what appetite there was for a reshuffle around the Cabinet table, Mr Lenihan said it wasn't the Cabinet's appetite; it was a matter for Taoiseach Brian Cowen.
There is increasing speculation that Mr Cowen will undertake a significant reshuffle in the coming weeks.
Mr Cowen is also expected to realign a number of departmental portfolios within the Government.
He told the Dáil this week that he would fill the Cabinet vacancy caused by the resignation of Minister for Defence Willie O'Dea in 'due course'.
When questioned on the subject this morning in Athlone, Mr Cowen said he would be retaining the defence portfolio himself for the present and the Government would proceed with its consideration of the situation.
A junior minister is also to be appointed following the resignation of Green Party TD Trevor Sargent from his food & horticulture portfolio.
Speculation on a realignment focuses mainly on the future of two departments: Arts, Sports & Tourism, and Community, Rural & Gaeltacht Affairs.
The realignment was outlined in the McCarthy Report last year.
However, there is speculation that changes will be made to economic portfolios with a possible realignment of the business currently allocated to Enterprise, Trade & Employment, and to the Department of Finance.
Mr Cowen refused to say this morning if the realignment would be done in the short-term or in the medium to long-term.
Elsewhere, the Green Party confirmed that Trevor Sargent has donated his ministerial payoff to the Society of Saint Vincent De Paul.
Earlier, Enda Kenny Fine Gael leader, has said 'talk of a ministerial reshuffle is a distraction from the real needs of the country.'
He continued ' the Government should shuffle off the stage as they had lost the moral authority to lead and their integrity is in shreds.'
Enda Kenny has called for an immediate general election saying the people should be allowed to decide what kind of Government they want to run the country.
