If the government's plan to outsource aged care assessment hits the fence, it can blame Aged Care Minister Richard Colbeck.

Colbeck has managed the unlikely feat of drawing a direct rebuke from a royal commission and highlighting widespread opposition to a strategy that has mostly been kept out of public view.

The government has long planned to complete the outsourcing of aged care assessment that it began in 2014, when it put out to tender Regional Assessment Services (RAS), which provide assessments for people wanting to access home care packages.