ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.2 > T23.22 > T23.222 T23.222 Burn of second degree of single left finger (nail) except thumb Non-Billable/Non-Specific Codes T23.222A..., initial encounterT23.222D..., subsequent encounterT23.222S..., sequela