For this web report, national estimates for gestational diabetes incidence are based on the number of hospitalisations of females aged 15–49 with a birth event and coexisting diagnosis of gestational diabetes. Total gestational diabetes hospitalisations however, may include multiple episodes of care and in other locations to where a birth event occurs.
In 2017–18, there were around 53,700 hospitalisations with gestational diabetes recorded as the principal and/or additional diagnosis. Most of these were recorded as an additional diagnosis (51,300 or 96% of gestational diabetes hospitalisations).