T23.64 - Corrosion of second degree of multiple fingers (nail), including thumb T23.6 - Corrosion of second degree of wrist and hand T23.64 - Corrosion of second degree of multiple fingers (nail), including thumb T23.641 - Corrosion of second degree of multiple right fingers (nail), including thumb T23.642 - Corrosion of second degree of multiple left fingers (nail), including thumb T23.649 - Corrosion of second degree of unspecified multiple fingers (nail), including thumb