ICD-10-CM > S00-T88 > T20-T25 > T23 > T23.1 > T23.13 > T23.131 T23.131 Burn of first degree of multiple right fingers (nail), not including thumb Non-Billable/Non-Specific Codes T23.131A..., initial encounterT23.131D..., subsequent encounterT23.131S..., sequela