The Hidden Toll: Underlying vs Contributing Causes of Death (2024)
Diabetes, high blood pressure, and obesity are the official cause of a fraction of the deaths they actually contribute to. The burden standard rankings miss.
Key findings
- The headline cause-of-death numbers understate what actually kills people. Diabetes was the official underlying cause of 94,638 deaths in 2024, but it appeared on 341,668 death certificates, 3.6 times as many.
- The gap is even wider for atrial fibrillation: the underlying cause of 27,976 deaths, but present on 228,311, a 8.2-fold difference.
- These conditions rarely kill alone. They pile onto the certificate as contributors to heart disease, kidney failure, and infection, so counting only the single underlying cause misses most of their footprint.
- The average 2024 death certificate lists 3.3 contributing conditions, which is why the underlying-cause tally is only part of the story.
Official "leading cause of death" rankings assign each death a single underlying cause. But a death certificate records every condition that contributed, and many of the most consequential conditions are far more common as contributors than as the lone underlying cause. This compares, for several conditions, how often each was the underlying cause of a 2024 death versus how often it appeared anywhere on the certificate. The gap is the part of the burden that standard rankings hide. These are exact counts from the near-census of death records.
Underlying cause vs mentioned anywhere
| Category | Underlying cause | Mentioned anywhere on certificate |
|---|---|---|
| Atrial fibrillation | 27,976 | 228,311 |
| Obesity | 8,995 | 61,763 |
| Sepsis | 39,719 | 220,579 |
| High blood pressure | 138,066 | 682,036 |
| Kidney disease | 54,039 | 250,730 |
| Diabetes | 94,638 | 341,668 |
By condition
| Condition | Underlying cause | Mentioned anywhere | Mentioned / underlying |
|---|---|---|---|
| Atrial fibrillation | 27,976 | 228,311 | 8.2x |
| Obesity | 8,995 | 61,763 | 6.9x |
| Sepsis | 39,719 | 220,579 | 5.6x |
| High blood pressure | 138,066 | 682,036 | 4.9x |
| Kidney disease | 54,039 | 250,730 | 4.6x |
| Diabetes | 94,638 | 341,668 | 3.6x |
Mentioned anywhere counts the condition among the record-axis multiple-cause codes (which include the underlying cause). Exact counts; no sampling margins of error.
Data Sources & Methodology
The figures on this page are computed directly from the source data below. Narrative text accompanies the figures but never generates them.
CDC/NCHS Mortality Multiple Cause-of-Death Public Use File
- Vintage:
- 2024
- Access:
- BigQuery
- Cadence:
- annual
A near-census of U.S. death records for the year, drawn from death certificates and coded to ICD-10. Each row is one death, with the underlying cause and all contributing (multiple) causes, age, sex, race and Hispanic origin, month and day of death, place and manner of death (natural, accident, suicide, homicide), marital status, education, autopsy, and disposition. It supports analysis of what Americans die of and how that varies by age and demographics.
Every U.S. death is registered on a death certificate, which NCHS compiles, codes to the International Classification of Diseases (ICD-10), and releases as an annual public-use micro-file. Each record carries one underlying cause plus all contributing causes.
The file covers essentially all registered deaths in the data year, not a probability sample. Statistics are exact counts; there are no sampling weights and no sampling margins of error.
To protect confidentiality, the public-use file omits state and county of residence and occurrence. Analyses here are national and demographic (by cause, age, sex, race and Hispanic origin, month, manner, and place of death). State-level figures require CDC WONDER or the restricted-use file.
Causes follow ICD-10. Alongside the underlying cause, NCHS provides standard recodes (358, 113, and 39 groups) used in its publications, and the full list of entity-axis and record-axis contributing conditions.
- The public-use file has no state or county geography, so it cannot be mapped sub-nationally.
- Cause of death depends on how certifiers complete death certificates; coding conventions and ill-defined ("garbage") codes affect some categories.
- The final annual file lags roughly a year behind the data year; provisional counts (via CDC WONDER) are more timely but less detailed.
- Age is reported in several recodes; very fine demographic cross-tabulations can be thin for rare causes.
How these figures were produced
- Estimate type:
- Administrative near-census (exact counts)
- Weighting:
- None (not a weighted sample)
Suggested citation
Centers for Disease Control and Prevention, National Center for Health Statistics, 2024 Mortality Multiple Cause-of-Death Public Use File. Analysis by Matt George, itsmattgeorge.com. Retrieved 2026-10-24.