Labor has accused the government of breaking a deal to win the support of Sue Hickey by reducing the number of elective surgery admissions under a women's health initiative.
But the government has pointed out the party has failed to take into account additional surgeries performed in the first year of the two-year deal.
Ms Hickey last year brokered a deal with the government which involved $7.2 million be provided for in a special fund to spend on 900 surgeries for women who had waited the longest on the state's elective surgery waiting list.
Labor leader Rebecca White said the revised Tasmanian Health Service 2019-20 service plan had reduced the number of elective surgery admissions under the women's health initiative from 567 to 458.
Health Minister Sarah Courtney said at the time the initial service agreement was prepared, it was expected 478 surgeries would be performed last financial year.
There were in fact 571 surgeries performed over this time, she said.
"A further 458 surgeries are now planned for 2019-20, bringing the estimate total to 1,029 procedures over two years - 129 more than originally planned," she said.
"There has been no change to the funding provided, the final numbers delivered depend on the complexity of patients treated.
"Importantly, these matters are determined with the expert input of clinicians."
There are 9426 people on the state's elective surgery waiting list.
The median time for category one elective surgery at the Launceston General Hospital was 15 days in 2017-18