Documents released to our newsroom show it being low-risk in its latest assessments - meaning its current status could be revoked.
It was previously rated at 15 percent of the building standard -- anything below 34 is of concern.
In May last year, the DHB announced the block was quake-prone, and patients and services were moved out.
Te Whatu Ora now envisages the Heretaunga block will remain in service for a number of years.
Health Minister Ayesha Verrall said, in a document, the Maternity ward would still be refurbished.