When the bail application was called Wednesday for mention, Ms Wakhungu said her health continues to deteriorate and she needed a medical assessment.
During the virtual proceedings, her lawyer Senior Counsel Paul Muite, said she will be marking eightieth birthday in the next two weeks.
Ms Grace Wakhungu, the convict serving 39 years in prison for graft, got a blow Wednesday after the High Court declined to release her to seek medical attention pending hearing of her bail application.
Justice John Onyiengo said the issue of her poor health can be raised on August 7 during hearing of the bail application, which she and her co-convict Sirisia MP John Waluke filed after they were imprisoned.