Trends in SUID Rates by Cause of Death, 1990—2024

Purpose

The sudden unexpected infant death (SUID) rate includes sudden infant death syndrome (SIDS), unknown cause, and accidental suffocation and strangulation in bed (ASSB). View the trends in SUID by cause of death from 1990—2024.

Trends in SUID rates by cause of death, 1990—2024

SOURCE: CDC/NCHS, National Vital Statistics System, Mortality Files. Rates calculated with CDC WONDER.

This graph shows trends in SUID rates in the United States during 1990 through 2024. Beginning in 2020, the SUID rate has been increasing. In 2024, the SUID rate was 93.6 deaths per 100,000 live births.

Sharp declines in SUID in the 1990s followed the release of:

• The American Academy of Pediatrics safe sleep recommendations in 1992.
• The initiation of the Back to Sleep campaign in 1994.
• The release of the Sudden Unexplained Infant Death Investigation Reporting Form in 1996.

Codes for cause of death were defined according to:

• The International Classification of Diseases, Ninth Revision (ICD-9) for 1984–1998
• The International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) for 1999–2024

We defined cause of death by using the following underlying cause of death ICD-9 and ICD-10 codes:

• ASSB (E913.0, W75)
• SIDS (798.0, R95)
• Unknown cause (799.9, R99)

Aug. 13, 2026

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Content Source

National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP); Division of Reproductive HealthAbout This Page

Published: September 16, 2024

Updated: August 13, 2026This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.

Reviewed: August 13, 2026The information on this page was last reviewed by subject matter experts to ensure accuracy.

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