T23.11 - Burn of first degree of thumb (nail) T23.1 - Burn of first degree of wrist and hand T23.11 - Burn of first degree of thumb (nail) T23.111 - Burn of first degree of right thumb (nail) T23.112 - Burn of first degree of left thumb (nail) T23.119 - Burn of first degree of unspecified thumb (nail)