Finding a cause of death typically involves obtaining a death certificate, requesting an autopsy report, or in some cases commissioning a private autopsy. The path depends on whether the death has already been investigated, your relationship to the deceased, and how much detail you need. A death certificate lists the official cause, but the full story often requires digging deeper into medical examiner records or forensic reports.
Start With the Death Certificate
Every death in the United States produces a death certificate, and it contains a dedicated section for the cause of death. The certificate uses a two-part format designed by the CDC. Part I records the chain of events that directly caused the death, starting with the immediate cause (the final condition) and working backward through intermediate causes to the underlying cause, which is the disease or injury that set everything in motion. Part II lists other significant conditions that contributed to the death but weren’t part of that direct chain.
For example, a certificate might list pneumonia as the immediate cause, lung cancer as an intermediate cause, and cigarette smoking as the underlying cause, with diabetes noted in Part II as a contributing factor. The underlying cause is what most people mean when they ask “what did they die of,” and it’s the one used in national mortality statistics.
You can request a death certificate through the vital records office in the state or county where the person died. Most states require you to be a family member, legal representative, or someone with a direct legal interest. Fees vary by state but typically range from $10 to $30 per copy. Processing takes anywhere from a few days to several weeks depending on the jurisdiction.
How the Cause of Death Is Determined
Most deaths are certified by the attending physician who was treating the person before they died. If a patient dies of a known illness in a hospital or under hospice care, the doctor fills out the cause of death section based on the medical history and circumstances. No autopsy is performed in these cases unless the family requests one or something unexpected occurs.
Deaths that are sudden, unexplained, violent, or suspicious fall under the jurisdiction of a coroner or medical examiner. These officials have the legal authority to investigate and determine both the cause of death (what killed the person) and the manner of death (how it happened, classified as natural, accident, suicide, homicide, or undetermined). The distinction between these two roles matters. Medical examiners are appointed physicians with board certification in forensic pathology. Coroners are elected officials who often lack medical training and may simultaneously serve as funeral directors, prosecutors, or sheriffs, which can create conflicts of interest. The quality of a death investigation can vary significantly depending on which system your county uses.
A forensic investigation typically includes an external examination of the body, clothing, and personal effects, followed by an internal examination of organs, and collection of samples for laboratory testing such as toxicology screens. Toxicology results alone can take weeks or even months to come back, which is why final autopsy reports are often delayed well beyond the initial death certificate filing.
Requesting an Autopsy Report
If an autopsy was performed, the report contains far more detail than a death certificate. It describes the condition of every organ system, documents injuries, and includes laboratory findings. But autopsy reports are not public records. They’re treated as confidential medical records, and access follows a strict hierarchy of legal next of kin.
That hierarchy typically runs in this order: surviving spouse or domestic partner (even if separated, but not divorced), court-appointed estate executor, adult children, parents, siblings, grandchildren, and then extended family members like nieces, nephews, aunts, uncles, and cousins. You generally cannot request a report if a closer relative is still living. If the death is connected to an active criminal investigation or homicide case, the district attorney’s office must approve release of the report.
To request one, contact the medical examiner’s or coroner’s office in the county where the death occurred. Many offices now offer online request forms. Some provide the report at no charge to next of kin, while others charge a fee, particularly for older records. Expect the final report to take several months after the death, since it incorporates toxicology and other lab work that isn’t available right away.
When No Autopsy Was Performed
Not every death triggers an autopsy. If someone dies of an apparent natural cause and a physician certifies the death, the coroner or medical examiner may never become involved. In these situations, the death certificate is your primary source of information, and the cause listed there comes from the treating physician’s clinical judgment rather than a forensic examination.
If you believe the listed cause of death is incomplete or incorrect, you have the option of commissioning a private autopsy. These are performed by independent forensic pathologists and can be arranged through the county coroner’s office, a private pathology practice, or a hospital. Costs vary widely, but as a reference point, San Bernardino County in California charges $3,734 for a private autopsy requested by next of kin. Independent facilities across the country generally range from $3,000 to $5,000 or more depending on the scope of testing. Only the legal next of kin can authorize a private autopsy.
Timing is critical. If the body has already been embalmed or cremated, a traditional autopsy becomes impossible or severely limited. If you’re considering a private autopsy, make that decision before funeral arrangements proceed.
Understanding What the Report Tells You
Reading a cause of death statement can be confusing because of a key distinction that even physicians sometimes get wrong: the difference between a cause and a mechanism of death. The cause of death is the specific disease or injury that started the chain of events leading to death. The mechanism is the body’s physiological response that actually ends life.
A useful way to think about it: keep asking “why?” until you can’t anymore. If someone died of blood loss, you ask why. Because of a severed artery. Why was the artery severed? A gunshot wound. That’s the cause of death. Blood loss is the mechanism, not the cause. Similarly, cardiac arrest appears on many death certificates, but it’s a mechanism (the heart stopping is how almost everyone dies). The real question is what caused the heart to stop: a heart attack, an overdose, a blood clot, an electrical injury.
The two most common errors in death certification are listing a mechanism instead of a cause and identifying the immediate cause without tracing it back to the underlying cause. If a death certificate you’ve received lists only something like “cardiopulmonary arrest” without further explanation, the certificate is incomplete and you may be able to request a correction through the certifying physician or the vital records office.
When the Cause Remains Unknown
In roughly 2% of injury-related deaths, the manner of death is classified as undetermined after investigation. This happens more frequently in cases involving poisoning or drowning, where intent is difficult to establish. A cause of death can also be listed as “undetermined” or “pending” when autopsy and toxicology results are inconclusive.
If you’re in this situation, you can request a meeting with the medical examiner or forensic pathologist who handled the case. They can walk you through what was found and what remained unclear. In some cases, families pursue independent forensic reviews, hiring a second pathologist to examine the records, slides, and photographs from the original autopsy. This won’t always produce a definitive answer, but it can sometimes identify findings that were overlooked or interpreted differently.
Religious Objections and Alternatives
Some families object to autopsies on religious grounds. Several states have enacted laws that limit or prevent forensic examination when a family’s objection is based on religious belief. In these cases, the forensic pathologist is expected to pause and determine whether there is a compelling legal reason that overrides the objection. Alternatives to a traditional autopsy exist, including external-only examination, imaging with CT or MRI, and targeted sampling through small incisions rather than a full dissection. If you’re facing this situation, communicate your concerns to the medical examiner’s office early, as many offices are willing to work with families to find an approach that respects religious practice while still meeting legal requirements.