Diabetes mellitus in pregnancy, childbirth, and the puerperium (O24)

ICD-10 code section O24 is used to classify different types of diabetes mellitus occurring during pregnancy, childbirth, and the postpartum period, known as the puerperium. This section includes codes for pre-existing type 1 and type 2 diabetes, unspecified diabetes, other pre-existing diabetes types, and gestational diabetes.

This section covers specific codes that identify the timing of the condition, such as which trimester of pregnancy (first, second, or third), childbirth, or the puerperium the diabetes affects. For example, O24.01 refers to pre-existing type 1 diabetes mellitus during pregnancy, while O24.410 identifies gestational diabetes mellitus managed by diet during pregnancy. Synonyms like “pregestational diabetes mellitus,” “pregnancy and type 1 or type 2 diabetes mellitus,” and “gestational diabetes mellitus class A1 or A2” help clarify code selection. These codes are essential for accurately documenting the impact of diabetes on maternal and fetal health during these specific phases, providing clear guidance for healthcare providers and medical coders seeking the ICD-10 code for diabetes complicating pregnancy and related periods.