Work and pensions spokesman Lord Freud repeated a statement on the personal independence payment, on 13 December 2012.
The statement was made earlier in the Commons by Minister for Disabled People Esther McVey.
From April 2013, the personal independence payment will replace the disability living allowance for for eligible working age people aged 16 to 64.
People in receipt of disability living allowance will not automatically qualify for the personal independence payment. They will need to apply for it and be individually assessed.
The government says there are "no current plans" to replace disability living allowance for children under 16 and people aged 65 and over who already receive it.
The government's changes to welfare will also see housing benefit, jobseekers' allowance and child and working tax credit merged into one new universal benefit.