A medical examiner is called whenever someone dies under circumstances that require an independent investigation to determine the cause and manner of death. This covers a wider range of situations than most people expect. Roughly 20% of all deaths in the United States fall under medical examiner or coroner jurisdiction, meaning about one in five deaths triggers some level of official investigation.
If a medical examiner has been called for someone you know, it does not necessarily mean foul play is suspected. Many of the most common reasons are routine and required by law.
Deaths That Legally Require a Medical Examiner
Every state has laws spelling out which deaths must be reported to a medical examiner or coroner. While exact wording varies, the categories are broadly consistent across the country. A medical examiner is typically called for:
- Apparent homicides, including any death where violence from another person may have been involved
- Suicides or suspected suicides
- Accidental deaths, including car crashes, falls, drownings, fires, and drug overdoses
- Deaths in custody of law enforcement, jails, prisons, or other government agencies
- Unattended deaths, meaning deaths where no physician can certify the cause as natural
- Suspicious or unexplained deaths, even if no specific crime is apparent
- Deaths related to poisoning or environmental exposure
- Workplace deaths or deaths related to on-the-job injuries
In some jurisdictions, the state’s chief medical examiner, health secretary, or attorney general can also order an investigation into any death they choose, even if it doesn’t neatly fit one of these categories.
What “Unattended Death” Actually Means
This is the reason that surprises most families. An unattended death doesn’t mean someone died alone in a dramatic way. It simply means the person had no physician who could sign the death certificate and confirm a natural cause. If someone dies at home and hasn’t seen a doctor recently, or their doctor is unfamiliar with their medical history, the death is considered unattended and a medical examiner gets involved.
Georgia law, which is representative of many states, defines it this way: a death where a person dies of apparently natural causes and has no physician who can certify the death as being due to natural causes. This includes situations where someone is brought to a hospital unconscious and dies within 24 hours of admission without regaining consciousness. These cases often turn out to be natural deaths from heart disease, stroke, or other medical conditions. The medical examiner’s job is simply to confirm that.
Hospital Deaths That Trigger a Call
Not every hospital death involves a medical examiner, but several specific situations require one. Deaths during or shortly after surgery where the outcome was unexpected, deaths that may be connected to a medical error, and deaths where the patient arrived in an unresponsive state and never recovered all typically fall under the medical examiner’s authority.
Deaths related to criminal violence, self-inflicted injury, poisoning, or drug overdose also require medical examiner involvement regardless of where they physically occur. If someone is shot on the street but dies three weeks later in a hospital, the medical examiner still handles the case because the underlying cause was non-natural.
What the Medical Examiner Actually Determines
A medical examiner answers two separate questions about every death they investigate. The first is the cause of death: the underlying medical condition, disease, or injury that started the chain of events leading to death. A gunshot wound, coronary artery disease, or blunt force trauma from a car accident are all examples of cause of death.
The second question is the manner of death, which describes how the death occurred. There are five possible classifications: homicide, suicide, accident, natural, or undetermined. Manner of death is a legal determination, not just a medical one. A death ruled a homicide, for instance, means another person caused it, but it doesn’t by itself determine criminal guilt. That’s for courts to decide.
These two findings together form the foundation for death certificates, insurance claims, criminal investigations, and public health records.
How Long the Process Takes
Families often want to know when they’ll get answers. When an autopsy is performed, the report is usually finalized within 60 days. Complex cases involving toxicology testing or additional investigation can take 90 days or longer. During that waiting period, the death certificate will list the cause and manner of death as “pending.” Once the forensic pathologist completes their report, an amended filing is sent to vital records with the final determination.
Preliminary findings, such as an initial assessment of what likely happened, are sometimes available much sooner. But the official report waits for all laboratory results to come back.
Identifying Unknown Remains
Medical examiners are also called when human remains are found and the person’s identity is unknown. The identification process follows a specific sequence. The fastest methods come first: visual identification by a relative, fingerprint comparison, and dental record matching. These techniques resolve the majority of cases.
When those methods fail, DNA analysis becomes the next step. A decedent’s genetic profile can be compared against family reference samples uploaded to the FBI’s Combined DNA Index System. In recent years, medical examiners have also begun using consumer genealogy databases to search for familial matches when all other approaches are exhausted. The FBI’s biometric database, which includes fingerprints, palmprints, iris scans, and facial recognition data, is another resource available to investigators working unidentified remains cases. A national system called NamUs also offers free forensic services, including DNA analysis, dental comparison, and fingerprint analysis, specifically for unidentified and missing persons cases.
The Public Health Role
Beyond individual cases, medical examiners serve as an early warning system for public health threats. Investigating unexplained deaths can reveal emerging infectious diseases, environmental hazards, or contaminated products before they’re detected by standard health surveillance. Several diseases of public health importance have been first identified through autopsies and postmortem testing performed by medical examiners working alongside public health agencies.
This surveillance function also extends to bioterrorism preparedness. Medical examiner offices are positioned to detect unusual patterns of death that could signal an intentional biological attack, functioning as a sentinel system for threats that traditional disease monitoring might miss.
Coordination With Organ Donation
When a death falls under medical examiner jurisdiction but the deceased is an organ donor, the medical examiner’s office coordinates with organ procurement organizations to balance two priorities: preserving forensic evidence and honoring the person’s wish to donate. National standards require both sides to cooperate. The medical examiner may perform an external inspection and collect trace evidence or fingerprints before organ recovery begins. Tissue recovery generally happens before autopsy to reduce contamination risk. The medical examiner can restrict procurement of specific organs or tissues only when doing so would destroy evidence or compromise the ability to determine how the person died.