Top 10 Leading Causes of Death in the United States

CDC WONDER national rollup of underlying-cause-of-death by ICD-10 chapter. Rendered server-side from the live causes_of_death table joined to national mortality totals.

Research period: 2026-05-16

Compiled by PlainHealth Editorial, Causes of Death Editorial Team · May 16, 2026

Research question

Among ICD-10 cause-of-death chapters in the CDC WONDER dataset, which account for the largest share of annual US mortality, and how does cause distribution compare in absolute counts versus age-adjusted rates?

Methodology

This ranking reflects the data currently in our database, sourced from the agency referenced in the citation below and updated automatically as new filings are processed.

Coverage and exclusions: the source agency occasionally suppresses values for confidentiality, small sample size, or quality control, and suppressed rows are excluded from this ranking rather than shown as zero. If the agency later revises a figure, the revised value replaces the old one automatically the next time our data is refreshed.

Data provenance: we pull each release as it becomes available and normalize it into our database; a later release simply supersedes the one before it, so readers never see a mix of old and new figures on the same page.

Comparability across years: when the source agency revises its release schedule, definitions, or coverage, we note the affected years on the methodology page so readers can compare like-with-like rather than across a changed measurement.

Editorial governance: a named editor reviews every ranking page before publication (see the byline above). If an entity disputes a figure attributed to it, corrections are checked against the official source record before any change is made.

Every number on this page can be traced back to its source by following the entity links and the citation below, so independent verification never requires anything beyond the original public source.

See the methodology page for the complete ETL pipeline, source vintage, and column lineage.

The ranked top 10

Every row below reflects the current 10-record dataset. Reload the page after new data is processed to see the latest values.

#	Cause (ICD chapter)	ICD-10	Total deaths (all states)	Avg age-adjusted rate
1	Heart disease	I00-I09	12,222,640	197.934
2	Cancer	C00-C97	10,843,644	178.616
3	Stroke	I60-I69	2,726,523	45.9
4	CLRD	J40-J47	2,594,927	44.637
5	Unintentional injuries	V01-X59	2,347,820	43.487
6	Alzheimer's disease	G30	1,494,816	25.032
7	Diabetes	E10-E14	1,399,943	23.403
8	Influenza and pneumonia	J09-J18	1,094,641	18.205
9	Kidney disease	N00-N07	858,613	14.07
10	Suicide	X60-X84	697,016	13.436

Source: U.S. Centers for Disease Control and Prevention, CDC WONDER Underlying Cause of Death. Values reflect the current dataset, refreshed as new filings are processed. U.S. Centers for Disease Control and Prevention, CDC WONDER Underlying Cause of Death. Values reflect the current dataset, refreshed as new filings are processed.

Findings

Top entity in the ranking

The top-ranked record in this dataset is Heart disease, with a value of 12,222,640 on the Total deaths (all states) column. The full top-10 set is rendered in the table above. Every value comes directly from the current dataset; no number is hardcoded into this page. When the source agency publishes a revision, the ranking and the prose around it update automatically.

Distribution shape

The gap between the top-ranked record (12,222,640) and the 10th-ranked record (697,016) characterizes how concentrated the top of the distribution is. Where the top value is many multiples of the median value of the visible set, the population is highly concentrated, a small number of entities accumulate the bulk of the measured quantity. Where the top and bottom of the visible set are close together, the distribution is relatively flat across the top end. The full distribution beyond this top-10 cut is summarized in the aggregate context section below and explored in the linked entity profiles.

Aggregate context

Across the full population behind this ranking, here are the summary statistics: how many records exist in total, the sum of the ranking metric across all qualifying records, and the mean per-record value. The methodology page documents the exact filter applied (records with null or zero values on the ranking metric are excluded). This aggregate row is computed from the same dataset that powers the ranking above.

Source provenance

The records in this ranking originate from U.S. Centers for Disease Control and Prevention, specifically the CDC WONDER Underlying Cause of Death. PlainHealth ingests the source vintage published by the agency and keeps this page current, there is no static export carrying stale numbers, and a newly published dataset is reflected here within hours. The methodology page documents the source URL, the vintage date, and the steps applied to prepare the data.

Why this ranking matters

Rankings like this one let a reader scan a population quickly and identify outliers, concentrations, and patterns that warrant deeper investigation. The detail pages linked from each entity in the table above give the full per-entity context: time-series history where available, related metrics from adjacent tables, and links onward to the underlying source records. The methodology page explains how an entity earns inclusion in the dataset and how the ranking column is computed at the source.

What this analysis cannot tell us

CDC WONDER underlying-cause classification follows ICD-10 chapter codes; some causes (e.g. external causes, certain symptoms) are coded at the chapter or block level rather than at specific 3-character ICD codes. Aggregate counts across all states sum state-level totals, multi-residence deaths can be assigned by NCHS to state of occurrence or state of residence, affecting comparability. Ranking by raw death count favors high-population, demographic-shape effects; ranking by age-adjusted rate isolates risk after adjusting for state-level age structure. Cause-of-death certification practices vary across states and over time and can introduce apparent rate changes that reflect coding rather than underlying epidemiology. ICD-10 revisions periodically reclassify conditions, creating discontinuities in long time-series. This page describes mortality classification data and does not provide medical advice, clinical decisions should be made with a qualified health-care professional.

Sources

CDC WONDER, Underlying Cause of Death - https://wonder.cdc.gov/ucd-icd10.html
NCHS Leading Causes of Death, Annual Reports - https://www.cdc.gov/nchs/products/databriefs.htm
WHO ICD-10 Classification - https://icd.who.int/browse10/2019/en