the bladder and lungs because they are not needed in the afterlife
Appendix
That is called an organ transplant. It is a surgical procedure where a healthy organ or tissue is removed from a donor and placed into a recipient to replace their damaged or failing organ.
There is only one organ that removal would be fatal and that is the liver. Most of the other organs, including the stomach, large intestine and sections of the small intestine can be safely removed as long as special diets are followed.
The urinary bladder
Presuming you are talking about the modern world, no. In fact, as a rule no organs are removed from the body, unless you consider the blood an organ. All or most of the blood is removed. If there is an autopsy before embalming, then any number of organs might be removed depending on the pathologist's needs.
The organ that is not removed from the body is the heart so that they can weigh it to see if you go to the underworld or not.
It is when a major organ is removed from the body and a replacement fitted or transplanted. Such as a heart transplant.
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gfe
The large intestine.
The large intestines
gall bladder
The large intestine
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spleen
the kidneys
The appendix is removed. The appendix is a vestigial organ found in the cecum. If it gets inflamed, it is removed and the surgery is called appendectomy.