The Minister of Health, Dr Jane Aceng, Permanent Secretary of Ministry of Health, Diana Kanzira Atwine and Members of Parliament have been blocked from entering Lubowa Hospital site.
The Permanent Secretary to the Treasury Keith Muhakanizi wrote a letter to Speaker Rebecca Kadaga asking the MPs not to go to Lubowa Hospital.
Muhakanizi claimed the visit would disorganise the contractors.
On Monday night tents were set up at Lubowa hospital site to host MPs but on Tuesday morning, the decision to host them changed.
The group was instead denied entrance to the premises of the specialized hospital ongoing works.
They found a bulldozer parked behind the iron sheet fence entrance and could not pass.
The minister was in Lubowa with the parliamentary committee that approved the loan to oversee on going work.
The contractor Finasi/ROKO says MPs and Ministers were blocked from accessing Lubowa Hospital site for health and safety reasons.
They say the MPs and Minister did not inform them of the visit.
According to Muhakanizi, government has already handed over the site to the contractor Finasi/ROKO.
He also says the matter of Lubowa hospital is in court and MPs visit to the site would constitute contempt of court.