Preeclampsia

Pregnancy, birth, and newborn. Also called: Pre-eclampsia.

How common is Preeclampsia in the US?

Pregnancy-associated hypertension coded on the delivery hospital stay: 13.0% (Delivery hospitalizations; United States, nationally representative hospital sample, 2019). Source: MMWR Morbidity and Mortality Weekly Report (CDC), 2022. Label: VERIFIED.

• 13.0% Pregnancy-associated hypertension coded on the delivery hospital stay. Out of: Delivery hospitalizations. Where: United States, nationally representative hospital sample. When: 2019. Covers all pregnancy-associated high blood pressure, not preeclampsia alone. Label: VERIFIED.

  The prevalence of pregnancy-associated hypertension increased from 10.8% in 2017 to 13.0% in 2019, while the prevalence of chronic hypertension increased from 2.0% to 2.3%.

  Source: Hypertensive Disorders in Pregnancy and Mortality at Delivery Hospitalization - United States, 2017-2019. MMWR Morbidity and Mortality Weekly Report (CDC), 2022. PubMed 35482575. DOI 10.15585/mmwr.mm7117a1.

Each figure measures something different. Do not compare them with each other or with other conditions.

Medical codes

• ICD-10-CM FY2026: O14.90 Unspecified pre-eclampsia, unspecified trimester (narrower). Other codes in this category also apply.

Research activity

As of 2026-09-24: 970 registered studies on ClinicalTrials.gov (search Preeclampsia) and 14,372 PubMed records, 2021 to 2025. A count of records is not how common or serious the condition is.

Population information, not medical advice. Methodology · Known limitations