There are calls for a wider debate, possibly led by an independent commission, into future mounting health funding needs.
Insurers in the Health Funds Association say the current approach to funding health cannot continue in the long term.
A fifth of all government spending, about $18 billion a year, goes on health - $14 billion of which comes from the Government, with the rest from the private sector.
The Health Funds Association says more debate is needed about whether it is sustainable, and debate could be led by a new group such as the Retirement Commission.
The association says government health funding is also growing at a rate that is unsustainable and eventually people will have to contribute more themselves. Chief executive Roger Styles says a public debate is needed.
"There's a role for some sort of a commission, and we don't have that equivalent in health. So I think something like the Retirement Commission, but charged with getting a broad consensus across public, private, not-for-profit, non-government - everyone."
Counties Manukau District Health Board chief executive Geraint Martin says changes are being made to ensure that the public health system is able to meet future demand, but a wider debate would be useful.
The Council of Trade Unions says public rather than private healthcare is best, and current funding should focus more on community and preventive healthcare.
