More than €30 million was spent by former health minister Mr Micheál Martin on 115 reports while he was at the Department of Health.
Mr Martin has been accused of wasting millions in taxpayers' money after the figures were confirmed by the Health Minister, Ms Harney.
Monaghan Fine Gael TD Mr Seymour Crawford, who received the information in recent days after requesting it more than three months ago, said money had clearly been wasted because many of the reports had never been acted upon. He gave the example of a report on Monaghan General Hospital.
The information he received from Ms Harney showed 145 reports were initiated by Mr Martin, but only 115 had been costed, showing a payment from the Department of approximately €30,150,000.
Among the most costly reports were the national health and lifestyle surveys which cost €669,985; the National Health Strategy - €820,000; the Prospectus report, which audited structures in the health service - €573,000; the forum on fluoridation - €328,100; the Hanly report - €741,051; the Hollywood report on where radiotherapy services should be located - €64,858; value for money audit of the health system - €615,757; the preliminary inquiry report into the handling of allegations of child sexual abuse relating to the Diocese of Ferns - €423,861 and the Gardiner report on the steps open to the State to instigate an effective inquiry into the role of international pharmaceutical companies into the infection with HIV and hepatitis C of persons with haemophilia, which cost €103,000.
Less costly reports included a review of the library and information unit in the Department of Health which cost €9,375.
The report of the independent review panel into the death of baby Bronagh Livingstone cost €7,841 and the Bonner report on the provision of services at Monaghan General Hospital cost €43,584.
Mr Crawford said the details were contained in a 17 page report from Ms Harney.
"The extensive 17 page reply has a wealth of detail. However, the fact remains that many of the reports were initiated for purely political purposes and were never acted upon.
"For example, take the report by Kevin Bonner on Monaghan General Hospital. This cost €43,584 and was designed to solve the hospital's problems. Yet some 15 months later it has been virtually ignored," he said.
Mr Crawford added: "It is impossible to justify spending such a large sum of money when cutbacks are being implemented across the health service, such as reduced home help hours, while nursing home beds are lying empty because subvention is not available, and more than 100,000 medical cards have been removed from low-income families.
"Given the time it took to get an answer to my question, and given that no costing has been provided for 30 inquiries or reports, one would have to question the efficiency of the entire administrative structure."