The biggest health overhaul in a generation is just one step away from becoming law.

The Bill which will see the 20 DHBs replaced by Health NZ, alongside a Māori Health Authority, has passed its third reading in Parliament 77 votes to 42.

The Act comes into force next month.

Health Minister Andrew Little told Mike Hosking $75 million has been spent on making the change so far.

He says that includes getting staff ready for the two entities, setting up the public health agency and the Iwi-Māori partnership boards.

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