More than £8m has been spent on the review into the future of children's heart surgeries which includes Glenfield Hospital in Leicester.
It follows the decision in July to cut the number of hospitals offering surgery for children with heart problems from eleven to seven.
The costs of the review were revealed in a Parliamentary question from Loughborough MP, Stuart Andrew, answered by Health Minister Anna Soubry.
Campaigners fighting to keep children's heart surgery at Glenfield hospital in Leicester are celebrating a High Court ruling.
A House of Commons debate will take place today (22 October) to discuss the closure of Glenfield's children's heart surgery.
The Secretary of State for Health, Jeremy Hunt, has asked for an initial review of plans to relocate the Glenfield Heart Unit.