The matter has been subject of discussions over the past three months.
The deal also included the extension of the Standard Gauge Railway (SGR).
The warning comes on the back of Ruto's trip to China.
It has been six years of waiting for the families of the affected.
The burial is set for Saturday, April 26, and will attract a host of notable world leaders.
The hospital has been under heavy scrutiny over allegations of international organ trafficking.
The reforms had elicited a heated debate among relevant stakeholders.
The government has been warned more billions could be lost unless action is taken.
Kenya is walking a diplomatic tightrope as it aims to secure support from both the East and the West.
The changes could result in some officers losing their jobs or even standing trial.