ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.2 > T23.23 > T23.231 T23.231 Burn of second degree of multiple right fingers (nail), not including thumb Non-Billable/Non-Specific Codes T23.231A..., initial encounterT23.231D..., subsequent encounterT23.231S..., sequela