Leading Causes of Death in the United States
Heart disease kills more Americans than anything else — roughly 700,000 deaths per year, according to the CDC's National Center for Health Statistics. That single number shapes how hospitals are staffed, how research dollars move, and how clinicians talk about risk with patients in their fifties. This page maps the leading causes of death across the U.S. population, explains how mortality data is collected and classified, and outlines the scenarios and thresholds that determine how causes are ranked and compared.
Definition and scope
The "leading causes of death" is a formal epidemiological ranking derived from death certificates filed across all 50 states. The National Center for Health Statistics (NCHS), a division of the CDC, compiles these certificates annually and applies the International Classification of Diseases, Tenth Revision (ICD-10) coding system to assign an underlying cause of death to each record. That underlying cause — not every condition verified on the certificate — is what gets counted in the ranking.
Scope matters here. The list reflects the U.S. resident population across all ages, sexes, and geographies, which means a cause that kills 80-year-olds at high rates will dominate the national ranking even if it barely touches people under 50. The full picture of health risk factors that feed into mortality is significantly more granular than any single list can capture.
The top 10 causes of death in the United States, based on NCHS data for 2022, are:
How it works
Death certificates are completed by attending physicians, medical examiners, or coroners and submitted to state vital statistics offices, which forward the data to NCHS. A trained nosologist — a specialist in disease classification — applies ICD-10 rules to identify the single underlying cause that initiated the chain of events leading to death.
This methodology has real consequences for what gets counted. If a person with diabetes dies of kidney failure, the underlying cause may be coded as diabetes rather than nephritis. If someone with heart failure also had respiratory disease, only one condition carries the underlying-cause designation. The system is designed for consistency, not drama — but it means the published rankings understate the burden of comorbid conditions that contribute to death without being coded as the root cause.
The gap between heart disease (702,880 deaths) and cancer (608,371 deaths) has narrowed considerably over the past four decades, driven by improved cardiovascular health interventions — statins, antihypertensives, smoking cessation programs — while cancer mortality has declined more gradually as screening and treatment have improved.
Common scenarios
The leading causes shift substantially depending on the demographic lens applied.
By age: Accidents are the leading cause of death for Americans aged 1–44, according to NCHS age-specific mortality tables. Heart disease and cancer dominate among adults 65 and older. This contrast explains why preventive health strategies look so different for young adults — where injury prevention and substance use interventions are central — versus older populations, where chronic disease management defines the clinical landscape.
By sex: Men die of heart disease at higher rates and at younger ages than women, on average. Women outlive men by approximately 5.4 years, a gap documented in NCHS National Vital Statistics Reports. Men's health and women's health frameworks reflect these divergent mortality profiles in screening recommendations, treatment protocols, and public health messaging.
By geography: Stroke mortality is significantly elevated in the "Stroke Belt" — a cluster of southeastern states including Mississippi, Alabama, Georgia, and South Carolina — relative to national averages, a pattern the CDC has tracked for decades. Rural counties carry disproportionate mortality from unintentional injuries and chronic disease, partly driven by reduced access to emergency care.
Decision boundaries
Not every death that belongs in a category gets classified there — and not every category that seems large actually ranks among the top causes in the formal methodology.
Mental health conditions illustrate this precisely. Suicide accounts for approximately 47,646 deaths annually (NCHS, 2022), which places it outside the top 10 nationally but makes it the 2nd leading cause of death for Americans aged 10–34. The underlying condition — mental health disorders including depression — is rarely coded as the underlying cause; suicide itself is.
Drug overdose deaths — approximately 107,941 in 2022 according to CDC provisional data — are classified primarily under accidents, which is why that category ranks 4th rather than appearing as a standalone entry. Separating overdose from the broader accidents category reveals a distinct public health emergency within the aggregate number.
Health equity researchers point to the consistent mortality gap between Black and white Americans across heart disease, diabetes, and stroke as evidence that cause-of-death rankings reflect not just biology but access to care, economic conditions, and social determinants of health. The leading causes list, read in isolation, is accurate. Read as a complete explanation of why Americans die when and how they do, it is a starting point, not a conclusion.