Maternal medical conditions codes

Variation in reported rates of gestational diabetes and diabetes mellitus may be related to changes over time and differences between hospitals in screening practice and management of abnormal glucose tolerance in pregnancy

Diabetes Mellitus

Diabetes mellitus includes pre-existing or pre-gestational diabetes, and is equivalent to the following ICD-10-AM codes: O24.0-O24.3 or O24.5.

Gestational Diabetes

Gestational diabetes includes diabetes diagnosed during the current pregnancy, and is equivalent to the following ICD-10-AM codes: O24.4 or O24.9.

Chronic hypertension

Chronic hypertension includes essential or secondary hypertension and may be referred to as pre-existing hypertension, and is equivalent to the following ICD-10-AM codes: O10 or O11.

Gestational hypertension

Gestational hypertension, called pregnancy-induced hypertension (non-proteinuric) in the Perinatal Data Collection in the period 2007 to 2010, is equivalent to the following ICD-10-AM code: O13.

Pre-eclampsia

Pre-eclampsia and eclampsia, called pregnancy-induced hypertension (proteinuric) in the Perinatal Data Collection in the period 2007 to 2010 are equivalent to the following ICD-10-AM codes: O14 or O15.

The definitions of hypertension follow those recommended by the Australasian Society for The Study of Hypertension in Pregnancy and described in the Society’s Consensus Statement on the Management of Hypertension in Pregnancy in 2001 and in 2014.