Maternal Mortality

Maternal mortality is a key indicator of population health. Deaths in pregnancy and postpartum should be rare events, so it is important to monitor maternal mortality. The data presented in this dashboard below provide information on maternal deaths, defined as the death while pregnant or within 42 days of termination of pregnancy, regardless of the duration and the site of the pregnancy, from any cause related to or aggravated by the pregnancy or its management, but not from accidental or incidental causes. This definition is used by the National Center for Health Statistics and the Title V Maternal and Child Health program. Data come from death certificates from the Vital Event Statistics Program. Please refer to the 'About the Data' and 'Definitions' below the dashboard for more information.

Definitions

Maternal death
The death of a woman while pregnant or within 42 days of termination of pregnancy, regardless of the duration and the site of the pregnancy, from any cause related to or aggravated by the pregnancy or its management, but not from accidental or incidental causes. This definition is used by the National Center for Health Statistics (NCHS) and the World Health Organization (WHO).

Pregnancy-associated death
A death during or within one year of pregnancy, regardless of the cause or the outcome of the pregnancy. These deaths make up the universe of maternal mortality; within that universe are pregnancy-related deaths and pregnancy-associated, but not related deaths.

Pregnancy-related death
A death during or within one year of pregnancy, from a pregnancy complication, a chain of events initiated by pregnancy, or the aggravation of an unrelated condition by the physiologic effects of pregnancy.

Pregnancy-associated, but not related death
A death during or within one year of pregnancy, from a cause that is not related to pregnancy.

Maternal Mortality
Maternal mortality refers to deaths while pregnant or within 42 days of termination of pregnancy. The MMRT program may use the term maternal mortality or pregnancy-associated mortality to encompass the topic of deaths during pregnancy, childbirth, and the postpartum period up to 365 days from the end of pregnancy.

Source: Eugene Declercq and Laurie Zephyrin, Maternal Mortality in the United States: A Primer (Commonwealth Fund, Dec. 2020).

Last Updated: April 22, 2025