ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.2 > T23.22 T23.22 Burn of second degree of single finger (nail) except thumb Non-Billable/Non-Specific Codes T23.221Burn of second degree of single right finger (nail) except thumbT23.221A..., initial encounterT23.221D..., subsequent encounterT23.221S..., sequelaT23.222Burn of second degree of single left finger (nail) except thumbT23.222A..., initial encounterT23.222D..., subsequent encounterT23.222S..., sequelaT23.229Burn of second degree of unspecified single finger (nail) except thumbT23.229A..., initial encounterT23.229D..., subsequent encounterT23.229S..., sequela