4,033. Blemishes of the Hands and Genitals

Hilchos Bias HaMikdash 8:11

There are six blemishes of the hands: (1) an extra finger, even if each hand is six-fingered (so that they match). If the extra finger is amputated, he may serve, but if it had a bone, he may not serve even if it’s amputated; (2) missing a fingers; (3) two fingers that are webbed until the joint. If they were separated to the joint, he may serve. The joint referred to is the first joint, i.e., the one closest to the palm; (4) fingers that are bent over one another; (5) a protrusion from the thumb; (6) being left-handed. If a kohein is ambidextrous, he may serve.

Hilchos Bias HaMikdash 8:12

There are four blemishes of the genitals: (1) an extended scrotum that reaches that knees; (2) a male member that reaches the knees; (3) if the scrotal membranes are crushed; (4) if the scrotal membranes are inflated. This is the m’roach ashech of Leviticus 20:20.