Attending physician not available

An associate physician who relieves the attending physician while the attending physician is on vacation or otherwise unavailable may certify to the cause of death in any case where the associate physician has access to the medical history of the case, provided that the associate physician views the deceased at or after death and that the death is from natural causes. In all other cases in which a physician is unavailable, the coroner shall prepare and file the medical certification of cause of death.