The number of cases being handled by the State Claims Agency (SCA) relating to the CervicalCheck cancer screening programme has risen to 20.
The new figures released this evening show the SCA is also dealing with five clinical cases relating to the BreastCheck programme.
In recent weeks, the Dáil has heard there were ten similar cases to Vicky Phelan's on the books of the SCA.
That figure now appears to have almost doubled, according to a response to a parliamentary question tabled by Fianna Fáil's Michael McGrath.
Mr McGrath said that Government commitments to resolve these cases outside the courts system must now be honoured.
In its response to the Dáil question, the SCA said it was committed to using mediation and it would treat the people who have made claims with dignity and compassion.
Ms Phelan was awarded €2.5 million in a settlement against a US lab last month over a false negative smear test in 2011.
She was only informed of the misread test last year, and her case only came to light in an audit after she had been diagnosed with cervical cancer in 2014.
The fallout from the controversy has resulted in two officials in CervicalCheck standing aside and the resignation of HSE Director General Tony O’Brien.