California coroners have an affirmative duty to inquire and determine the circumstances, manner and
cause of all violent, sudden or unusual deaths; unattended deaths and deaths where the deceased has not been seen by a physician in the 20 days before death.
The law also lists certain types of death that require coroner investigation. The coroner must inquire and determine the
circumstances, manner and cause of death when any of these types of death are suspected:
If death occurs, even a "natural death", in one of these places a coroner investigation is required to determine the circumstances, manner and
cause of death:
Source: Cal. Govt. Code Section 27491
So in simple terms, the coroner investigates and reports manner and cause of death in many common scenarios. So you may ask "When does a coroner not get involved?" Well often times a coroner is not involved when a person has a terminal illness (e.g. cancer) and dies in a local hospital, or when a person is elderly and is under physician care and dying naturally from age related organ failure (while under hospice care).
What if you suspect a wrongful or accidental death and you find out that the coroner is not involved? For example, your deceased loved one is being transported direct to a mortuary, funeral home or crematory and a physician is signing the death certificate. In that case, you must act fast. You may need to hire a wrongful death lawyer and seek coroner intervention, and, if necessary, consider whether an independent autopsy is needed to determine cause and manner of death. Failure to notify the coroner's office and/or the mortuary, funeral home or crematory timely may result in the failure to secure evidence needed to prove a wrongful death case.
It is a misdemeanor to move a deceased persons body from its place of death if the death is one of the types or locations referenced above. In other words, the coroner should be able to acquire the body of your loved one from the exact location where he or she died. See Cal. Govt. Code Section 27491.2(b). As you might suspect, the exact location of death may provide the coroner clues as to the cause and manner of death and this is why the law requires that the body remain in the place of death until the coroner arrives.