There's no nationwide one-to-three-day rule for keeping a person at home after death. The safe and lawful timing depends on state and local requirements, the condition and cause of death, the available cooling method, and the receiving cemetery or crematory's requirements.
Before planning the timing, ask the state or local health or vital-records office and the receiving provider what’s required. If an infectious illness is known or suspected, or if the death is under medical-examiner or coroner jurisdiction, follow instructions from the clinician, public-health agency, or investigating office before washing, dressing, or moving the person.
Official guidance is specific to the place and circumstances. Massachusetts public-health guidance, for example, advises keeping the body as cool as possible, avoiding direct contact with body fluids, using appropriate barriers when contact is possible, and washing hands thoroughly. It’s guidance for Massachusetts, not a national timeline.[5]
Do not assume there's no infection risk because the death seemed ordinary or no infectious disease was listed. CDC notes that germs may be present in blood or other body fluids even when an infectious disease wasn't the stated cause of death. Ask for situation-specific precautions before providing hands-on care.[6]