Eclampsia (O15)

ICD-10 code O15 and its subcodes classify various stages and timing of eclampsia, a serious pregnancy-related condition involving seizures. These codes are essential for documenting eclampsia whether it occurs during pregnancy, labor, or the postpartum period.

Eclampsia, sometimes referred to as eclamptic seizure or puerperal convulsion, is captured across the ICD-10 codes in section O15. For example, O15.00 codes for eclampsia during pregnancy when the trimester is unspecified, while O15.02 and O15.03 specify the second and third trimesters respectively. When eclampsia occurs during labor or childbirth, coders use O15.1, which also covers cases involving pre-existing hypertension. Similarly, O15.2 is designated for eclampsia complications in the puerperium, the postpartum phase. The general code O15.9 applies when the timing of eclampsia onset is not specified. These detailed distinctions help medical coders assign the correct ICD-10 code for precise reporting, billing, and epidemiological tracking of hypertensive disorders complicating pregnancy.