T23.74 - Corrosion of third degree of multiple fingers (nail), including thumb T23.7 - Corrosion of third degree of wrist and hand T23.74 - Corrosion of third degree of multiple fingers (nail), including thumb T23.741 - Corrosion of third degree of multiple right fingers (nail), including thumb T23.742 - Corrosion of third degree of multiple left fingers (nail), including thumb T23.749 - Corrosion of third degree of unspecified multiple fingers (nail), including thumb